diff --git a/c++/greptime/v1/ddl.pb.cc b/c++/greptime/v1/ddl.pb.cc
index 2bb04de0..fa8972e8 100644
--- a/c++/greptime/v1/ddl.pb.cc
+++ b/c++/greptime/v1/ddl.pb.cc
@@ -36,23 +36,23 @@ struct DdlRequestDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DdlRequestDefaultTypeInternal _DdlRequest_default_instance_;
-PROTOBUF_CONSTEXPR CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse(
+PROTOBUF_CONSTEXPR CreateFlowExpr_FlowOptionsEntry_DoNotUse::CreateFlowExpr_FlowOptionsEntry_DoNotUse(
     ::_pbi::ConstantInitialized) {}
-struct CreateFlowTaskExpr_TaskOptionsEntry_DoNotUseDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR CreateFlowTaskExpr_TaskOptionsEntry_DoNotUseDefaultTypeInternal()
+struct CreateFlowExpr_FlowOptionsEntry_DoNotUseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CreateFlowExpr_FlowOptionsEntry_DoNotUseDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~CreateFlowTaskExpr_TaskOptionsEntry_DoNotUseDefaultTypeInternal() {}
+  ~CreateFlowExpr_FlowOptionsEntry_DoNotUseDefaultTypeInternal() {}
   union {
-    CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse _instance;
+    CreateFlowExpr_FlowOptionsEntry_DoNotUse _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlowTaskExpr_TaskOptionsEntry_DoNotUseDefaultTypeInternal _CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse_default_instance_;
-PROTOBUF_CONSTEXPR CreateFlowTaskExpr::CreateFlowTaskExpr(
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlowExpr_FlowOptionsEntry_DoNotUseDefaultTypeInternal _CreateFlowExpr_FlowOptionsEntry_DoNotUse_default_instance_;
+PROTOBUF_CONSTEXPR CreateFlowExpr::CreateFlowExpr(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.source_table_names_)*/{}
-  , /*decltype(_impl_.task_options_)*/{::_pbi::ConstantInitialized()}
+  , /*decltype(_impl_.flow_options_)*/{::_pbi::ConstantInitialized()}
   , /*decltype(_impl_.catalog_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
-  , /*decltype(_impl_.task_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_.flow_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.expire_when_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.comment_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.sql_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
@@ -60,29 +60,29 @@ PROTOBUF_CONSTEXPR CreateFlowTaskExpr::CreateFlowTaskExpr(
   , /*decltype(_impl_.or_replace_)*/false
   , /*decltype(_impl_.create_if_not_exists_)*/false
   , /*decltype(_impl_._cached_size_)*/{}} {}
-struct CreateFlowTaskExprDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR CreateFlowTaskExprDefaultTypeInternal()
+struct CreateFlowExprDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CreateFlowExprDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~CreateFlowTaskExprDefaultTypeInternal() {}
+  ~CreateFlowExprDefaultTypeInternal() {}
   union {
-    CreateFlowTaskExpr _instance;
+    CreateFlowExpr _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlowTaskExprDefaultTypeInternal _CreateFlowTaskExpr_default_instance_;
-PROTOBUF_CONSTEXPR DropFlowTaskExpr::DropFlowTaskExpr(
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlowExprDefaultTypeInternal _CreateFlowExpr_default_instance_;
+PROTOBUF_CONSTEXPR DropFlowExpr::DropFlowExpr(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.catalog_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
-  , /*decltype(_impl_.task_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
+  , /*decltype(_impl_.flow_name_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_._cached_size_)*/{}} {}
-struct DropFlowTaskExprDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR DropFlowTaskExprDefaultTypeInternal()
+struct DropFlowExprDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR DropFlowExprDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~DropFlowTaskExprDefaultTypeInternal() {}
+  ~DropFlowExprDefaultTypeInternal() {}
   union {
-    DropFlowTaskExpr _instance;
+    DropFlowExpr _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropFlowTaskExprDefaultTypeInternal _DropFlowTaskExpr_default_instance_;
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropFlowExprDefaultTypeInternal _DropFlowExpr_default_instance_;
 PROTOBUF_CONSTEXPR CreateTableExpr_TableOptionsEntry_DoNotUse::CreateTableExpr_TableOptionsEntry_DoNotUse(
     ::_pbi::ConstantInitialized) {}
 struct CreateTableExpr_TableOptionsEntry_DoNotUseDefaultTypeInternal {
@@ -370,40 +370,40 @@ const uint32_t TableStruct_greptime_2fv1_2fddl_2eproto::offsets[] PROTOBUF_SECTI
   ::_pbi::kInvalidFieldOffsetTag,
   ::_pbi::kInvalidFieldOffsetTag,
   PROTOBUF_FIELD_OFFSET(::greptime::v1::DdlRequest, _impl_.expr_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse, _has_bits_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse, _has_bits_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse, key_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse, value_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse, key_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse, value_),
   0,
   1,
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.catalog_name_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.task_name_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.source_table_names_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.sink_table_name_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.or_replace_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.create_if_not_exists_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.expire_when_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.comment_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.sql_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowTaskExpr, _impl_.task_options_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.catalog_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.flow_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.source_table_names_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.sink_table_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.or_replace_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.create_if_not_exists_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.expire_when_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.comment_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.sql_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateFlowExpr, _impl_.flow_options_),
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropFlowTaskExpr, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropFlowExpr, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropFlowTaskExpr, _impl_.catalog_name_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropFlowTaskExpr, _impl_.task_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropFlowExpr, _impl_.catalog_name_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::DropFlowExpr, _impl_.flow_name_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse, _has_bits_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -578,9 +578,9 @@ const uint32_t TableStruct_greptime_2fv1_2fddl_2eproto::offsets[] PROTOBUF_SECTI
 };
 static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) = {
   { 0, -1, -1, sizeof(::greptime::v1::DdlRequest)},
-  { 14, 22, -1, sizeof(::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse)},
-  { 24, -1, -1, sizeof(::greptime::v1::CreateFlowTaskExpr)},
-  { 40, -1, -1, sizeof(::greptime::v1::DropFlowTaskExpr)},
+  { 14, 22, -1, sizeof(::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse)},
+  { 24, -1, -1, sizeof(::greptime::v1::CreateFlowExpr)},
+  { 40, -1, -1, sizeof(::greptime::v1::DropFlowExpr)},
   { 48, 56, -1, sizeof(::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse)},
   { 58, -1, -1, sizeof(::greptime::v1::CreateTableExpr)},
   { 75, -1, -1, sizeof(::greptime::v1::AlterExpr)},
@@ -603,9 +603,9 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
 
 static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::_DdlRequest_default_instance_._instance,
-  &::greptime::v1::_CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse_default_instance_._instance,
-  &::greptime::v1::_CreateFlowTaskExpr_default_instance_._instance,
-  &::greptime::v1::_DropFlowTaskExpr_default_instance_._instance,
+  &::greptime::v1::_CreateFlowExpr_FlowOptionsEntry_DoNotUse_default_instance_._instance,
+  &::greptime::v1::_CreateFlowExpr_default_instance_._instance,
+  &::greptime::v1::_DropFlowExpr_default_instance_._instance,
   &::greptime::v1::_CreateTableExpr_TableOptionsEntry_DoNotUse_default_instance_._instance,
   &::greptime::v1::_CreateTableExpr_default_instance_._instance,
   &::greptime::v1::_AlterExpr_default_instance_._instance,
@@ -628,93 +628,92 @@ static const ::_pb::Message* const file_default_instances[] = {
 
 const char descriptor_table_protodef_greptime_2fv1_2fddl_2eproto[] PROTOBUF_SECTION_VARIABLE(protodesc_cold) =
   "\n\025greptime/v1/ddl.proto\022\013greptime.v1\032\030gr"
-  "eptime/v1/common.proto\"\221\003\n\nDdlRequest\022:\n"
+  "eptime/v1/common.proto\"\377\002\n\nDdlRequest\022:\n"
   "\017create_database\030\001 \001(\0132\037.greptime.v1.Cre"
   "ateDatabaseExprH\000\0224\n\014create_table\030\002 \001(\0132"
   "\034.greptime.v1.CreateTableExprH\000\022\'\n\005alter"
   "\030\003 \001(\0132\026.greptime.v1.AlterExprH\000\0220\n\ndrop"
   "_table\030\004 \001(\0132\032.greptime.v1.DropTableExpr"
   "H\000\0228\n\016truncate_table\030\007 \001(\0132\036.greptime.v1"
-  ".TruncateTableExprH\000\022;\n\020create_flow_task"
-  "\030\010 \001(\0132\037.greptime.v1.CreateFlowTaskExprH"
-  "\000\0227\n\016drop_flow_task\030\t \001(\0132\035.greptime.v1."
-  "DropFlowTaskExprH\000B\006\n\004expr\"\203\003\n\022CreateFlo"
-  "wTaskExpr\022\024\n\014catalog_name\030\001 \001(\t\022\021\n\ttask_"
-  "name\030\002 \001(\t\0222\n\022source_table_names\030\003 \003(\0132\026"
-  ".greptime.v1.TableName\022/\n\017sink_table_nam"
-  "e\030\004 \001(\0132\026.greptime.v1.TableName\022\022\n\nor_re"
-  "place\030\005 \001(\010\022\034\n\024create_if_not_exists\030\006 \001("
-  "\010\022\023\n\013expire_when\030\007 \001(\t\022\017\n\007comment\030\010 \001(\t\022"
-  "\013\n\003sql\030\t \001(\t\022F\n\014task_options\030\n \003(\01320.gre"
-  "ptime.v1.CreateFlowTaskExpr.TaskOptionsE"
-  "ntry\0322\n\020TaskOptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n"
-  "\005value\030\002 \001(\t:\0028\001\";\n\020DropFlowTaskExpr\022\024\n\014"
-  "catalog_name\030\001 \001(\t\022\021\n\ttask_name\030\002 \001(\t\"\207\003"
-  "\n\017CreateTableExpr\022\024\n\014catalog_name\030\001 \001(\t\022"
-  "\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_name\030\003 \001(\t"
-  "\022\014\n\004desc\030\004 \001(\t\022+\n\013column_defs\030\005 \003(\0132\026.gr"
-  "eptime.v1.ColumnDef\022\022\n\ntime_index\030\006 \001(\t\022"
-  "\024\n\014primary_keys\030\007 \003(\t\022\034\n\024create_if_not_e"
-  "xists\030\010 \001(\010\022E\n\rtable_options\030\t \003(\0132..gre"
-  "ptime.v1.CreateTableExpr.TableOptionsEnt"
-  "ry\022&\n\010table_id\030\n \001(\0132\024.greptime.v1.Table"
-  "Id\022\016\n\006engine\030\014 \001(\t\0323\n\021TableOptionsEntry\022"
-  "\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\245\002\n\tAlte"
-  "rExpr\022\024\n\014catalog_name\030\001 \001(\t\022\023\n\013schema_na"
-  "me\030\002 \001(\t\022\022\n\ntable_name\030\003 \001(\t\022.\n\013add_colu"
-  "mns\030\004 \001(\0132\027.greptime.v1.AddColumnsH\000\0220\n\014"
-  "drop_columns\030\005 \001(\0132\030.greptime.v1.DropCol"
-  "umnsH\000\0220\n\014rename_table\030\006 \001(\0132\030.greptime."
-  "v1.RenameTableH\000\022=\n\023change_column_types\030"
-  "\007 \001(\0132\036.greptime.v1.ChangeColumnTypesH\000B"
-  "\006\n\004kind\"\216\001\n\rDropTableExpr\022\024\n\014catalog_nam"
-  "e\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_na"
-  "me\030\003 \001(\t\022&\n\010table_id\030\004 \001(\0132\024.greptime.v1"
-  ".TableId\022\026\n\016drop_if_exists\030\005 \001(\010\"\314\001\n\022Cre"
-  "ateDatabaseExpr\022\024\n\014catalog_name\030\001 \001(\t\022\023\n"
-  "\013schema_name\030\002 \001(\t\022\034\n\024create_if_not_exis"
-  "ts\030\003 \001(\010\022=\n\007options\030\004 \003(\0132,.greptime.v1."
-  "CreateDatabaseExpr.OptionsEntry\032.\n\014Optio"
-  "nsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\""
-  "z\n\021TruncateTableExpr\022\024\n\014catalog_name\030\001 \001"
-  "(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_name\030\003 "
-  "\001(\t\022&\n\010table_id\030\004 \001(\0132\024.greptime.v1.Tabl"
-  "eId\"U\n\020DropDatabaseExpr\022\024\n\014catalog_name\030"
-  "\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\026\n\016drop_if_ex"
-  "ists\030\003 \001(\010\"9\n\nAddColumns\022+\n\013add_columns\030"
-  "\001 \003(\0132\026.greptime.v1.AddColumn\"<\n\013DropCol"
-  "umns\022-\n\014drop_columns\030\001 \003(\0132\027.greptime.v1"
-  ".DropColumn\"O\n\021ChangeColumnTypes\022:\n\023chan"
-  "ge_column_types\030\001 \003(\0132\035.greptime.v1.Chan"
-  "geColumnType\"%\n\013RenameTable\022\026\n\016new_table"
-  "_name\030\001 \001(\t\"i\n\tAddColumn\022*\n\ncolumn_def\030\001"
-  " \001(\0132\026.greptime.v1.ColumnDef\0220\n\010location"
-  "\030\003 \001(\0132\036.greptime.v1.AddColumnLocation\"\236"
-  "\001\n\020ChangeColumnType\022\023\n\013column_name\030\001 \001(\t"
-  "\0220\n\013target_type\030\002 \001(\0162\033.greptime.v1.Colu"
-  "mnDataType\022C\n\025target_type_extension\030\003 \001("
-  "\0132$.greptime.v1.ColumnDataTypeExtension\""
-  "\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"\025\n\007TableId\022\n"
-  "\n\002id\030\001 \001(\r\"\377\001\n\tColumnDef\022\014\n\004name\030\001 \001(\t\022."
-  "\n\tdata_type\030\002 \001(\0162\033.greptime.v1.ColumnDa"
-  "taType\022\023\n\013is_nullable\030\003 \001(\010\022\032\n\022default_c"
-  "onstraint\030\004 \001(\014\0220\n\rsemantic_type\030\005 \001(\0162\031"
-  ".greptime.v1.SemanticType\022\017\n\007comment\030\006 \001"
-  "(\t\022@\n\022datatype_extension\030\007 \001(\0132$.greptim"
-  "e.v1.ColumnDataTypeExtension\"\230\001\n\021AddColu"
-  "mnLocation\022B\n\rlocation_type\030\001 \001(\0162+.grep"
-  "time.v1.AddColumnLocation.LocationType\022\031"
-  "\n\021after_column_name\030\002 \001(\t\"$\n\014LocationTyp"
-  "e\022\t\n\005FIRST\020\000\022\t\n\005AFTER\020\001BL\n\016io.greptime.v"
-  "1B\003DdlZ5github.com/GreptimeTeam/greptime"
-  "-proto/go/greptime/v1b\006proto3"
+  ".TruncateTableExprH\000\0222\n\013create_flow\030\010 \001("
+  "\0132\033.greptime.v1.CreateFlowExprH\000\022.\n\tdrop"
+  "_flow\030\t \001(\0132\031.greptime.v1.DropFlowExprH\000"
+  "B\006\n\004expr\"\373\002\n\016CreateFlowExpr\022\024\n\014catalog_n"
+  "ame\030\001 \001(\t\022\021\n\tflow_name\030\002 \001(\t\0222\n\022source_t"
+  "able_names\030\003 \003(\0132\026.greptime.v1.TableName"
+  "\022/\n\017sink_table_name\030\004 \001(\0132\026.greptime.v1."
+  "TableName\022\022\n\nor_replace\030\005 \001(\010\022\034\n\024create_"
+  "if_not_exists\030\006 \001(\010\022\023\n\013expire_when\030\007 \001(\t"
+  "\022\017\n\007comment\030\010 \001(\t\022\013\n\003sql\030\t \001(\t\022B\n\014flow_o"
+  "ptions\030\n \003(\0132,.greptime.v1.CreateFlowExp"
+  "r.FlowOptionsEntry\0322\n\020FlowOptionsEntry\022\013"
+  "\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"7\n\014DropFl"
+  "owExpr\022\024\n\014catalog_name\030\001 \001(\t\022\021\n\tflow_nam"
+  "e\030\002 \001(\t\"\207\003\n\017CreateTableExpr\022\024\n\014catalog_n"
+  "ame\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_"
+  "name\030\003 \001(\t\022\014\n\004desc\030\004 \001(\t\022+\n\013column_defs\030"
+  "\005 \003(\0132\026.greptime.v1.ColumnDef\022\022\n\ntime_in"
+  "dex\030\006 \001(\t\022\024\n\014primary_keys\030\007 \003(\t\022\034\n\024creat"
+  "e_if_not_exists\030\010 \001(\010\022E\n\rtable_options\030\t"
+  " \003(\0132..greptime.v1.CreateTableExpr.Table"
+  "OptionsEntry\022&\n\010table_id\030\n \001(\0132\024.greptim"
+  "e.v1.TableId\022\016\n\006engine\030\014 \001(\t\0323\n\021TableOpt"
+  "ionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028"
+  "\001\"\245\002\n\tAlterExpr\022\024\n\014catalog_name\030\001 \001(\t\022\023\n"
+  "\013schema_name\030\002 \001(\t\022\022\n\ntable_name\030\003 \001(\t\022."
+  "\n\013add_columns\030\004 \001(\0132\027.greptime.v1.AddCol"
+  "umnsH\000\0220\n\014drop_columns\030\005 \001(\0132\030.greptime."
+  "v1.DropColumnsH\000\0220\n\014rename_table\030\006 \001(\0132\030"
+  ".greptime.v1.RenameTableH\000\022=\n\023change_col"
+  "umn_types\030\007 \001(\0132\036.greptime.v1.ChangeColu"
+  "mnTypesH\000B\006\n\004kind\"\216\001\n\rDropTableExpr\022\024\n\014c"
+  "atalog_name\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022"
+  "\n\ntable_name\030\003 \001(\t\022&\n\010table_id\030\004 \001(\0132\024.g"
+  "reptime.v1.TableId\022\026\n\016drop_if_exists\030\005 \001"
+  "(\010\"\314\001\n\022CreateDatabaseExpr\022\024\n\014catalog_nam"
+  "e\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\034\n\024create_i"
+  "f_not_exists\030\003 \001(\010\022=\n\007options\030\004 \003(\0132,.gr"
+  "eptime.v1.CreateDatabaseExpr.OptionsEntr"
+  "y\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030"
+  "\002 \001(\t:\0028\001\"z\n\021TruncateTableExpr\022\024\n\014catalo"
+  "g_name\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntab"
+  "le_name\030\003 \001(\t\022&\n\010table_id\030\004 \001(\0132\024.grepti"
+  "me.v1.TableId\"U\n\020DropDatabaseExpr\022\024\n\014cat"
+  "alog_name\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\026\n\016"
+  "drop_if_exists\030\003 \001(\010\"9\n\nAddColumns\022+\n\013ad"
+  "d_columns\030\001 \003(\0132\026.greptime.v1.AddColumn\""
+  "<\n\013DropColumns\022-\n\014drop_columns\030\001 \003(\0132\027.g"
+  "reptime.v1.DropColumn\"O\n\021ChangeColumnTyp"
+  "es\022:\n\023change_column_types\030\001 \003(\0132\035.grepti"
+  "me.v1.ChangeColumnType\"%\n\013RenameTable\022\026\n"
+  "\016new_table_name\030\001 \001(\t\"i\n\tAddColumn\022*\n\nco"
+  "lumn_def\030\001 \001(\0132\026.greptime.v1.ColumnDef\0220"
+  "\n\010location\030\003 \001(\0132\036.greptime.v1.AddColumn"
+  "Location\"\236\001\n\020ChangeColumnType\022\023\n\013column_"
+  "name\030\001 \001(\t\0220\n\013target_type\030\002 \001(\0162\033.grepti"
+  "me.v1.ColumnDataType\022C\n\025target_type_exte"
+  "nsion\030\003 \001(\0132$.greptime.v1.ColumnDataType"
+  "Extension\"\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"\025\n"
+  "\007TableId\022\n\n\002id\030\001 \001(\r\"\377\001\n\tColumnDef\022\014\n\004na"
+  "me\030\001 \001(\t\022.\n\tdata_type\030\002 \001(\0162\033.greptime.v"
+  "1.ColumnDataType\022\023\n\013is_nullable\030\003 \001(\010\022\032\n"
+  "\022default_constraint\030\004 \001(\014\0220\n\rsemantic_ty"
+  "pe\030\005 \001(\0162\031.greptime.v1.SemanticType\022\017\n\007c"
+  "omment\030\006 \001(\t\022@\n\022datatype_extension\030\007 \001(\013"
+  "2$.greptime.v1.ColumnDataTypeExtension\"\230"
+  "\001\n\021AddColumnLocation\022B\n\rlocation_type\030\001 "
+  "\001(\0162+.greptime.v1.AddColumnLocation.Loca"
+  "tionType\022\031\n\021after_column_name\030\002 \001(\t\"$\n\014L"
+  "ocationType\022\t\n\005FIRST\020\000\022\t\n\005AFTER\020\001BL\n\016io."
+  "greptime.v1B\003DdlZ5github.com/GreptimeTea"
+  "m/greptime-proto/go/greptime/v1b\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fddl_2eproto_deps[1] = {
   &::descriptor_table_greptime_2fv1_2fcommon_2eproto,
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fddl_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fddl_2eproto = {
-    false, false, 3229, descriptor_table_protodef_greptime_2fv1_2fddl_2eproto,
+    false, false, 3199, descriptor_table_protodef_greptime_2fv1_2fddl_2eproto,
     "greptime/v1/ddl.proto",
     &descriptor_table_greptime_2fv1_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fddl_2eproto_deps, 1, 22,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fddl_2eproto::offsets,
@@ -760,8 +759,8 @@ class DdlRequest::_Internal {
   static const ::greptime::v1::AlterExpr& alter(const DdlRequest* msg);
   static const ::greptime::v1::DropTableExpr& drop_table(const DdlRequest* msg);
   static const ::greptime::v1::TruncateTableExpr& truncate_table(const DdlRequest* msg);
-  static const ::greptime::v1::CreateFlowTaskExpr& create_flow_task(const DdlRequest* msg);
-  static const ::greptime::v1::DropFlowTaskExpr& drop_flow_task(const DdlRequest* msg);
+  static const ::greptime::v1::CreateFlowExpr& create_flow(const DdlRequest* msg);
+  static const ::greptime::v1::DropFlowExpr& drop_flow(const DdlRequest* msg);
 };
 
 const ::greptime::v1::CreateDatabaseExpr&
@@ -784,13 +783,13 @@ const ::greptime::v1::TruncateTableExpr&
 DdlRequest::_Internal::truncate_table(const DdlRequest* msg) {
   return *msg->_impl_.expr_.truncate_table_;
 }
-const ::greptime::v1::CreateFlowTaskExpr&
-DdlRequest::_Internal::create_flow_task(const DdlRequest* msg) {
-  return *msg->_impl_.expr_.create_flow_task_;
+const ::greptime::v1::CreateFlowExpr&
+DdlRequest::_Internal::create_flow(const DdlRequest* msg) {
+  return *msg->_impl_.expr_.create_flow_;
 }
-const ::greptime::v1::DropFlowTaskExpr&
-DdlRequest::_Internal::drop_flow_task(const DdlRequest* msg) {
-  return *msg->_impl_.expr_.drop_flow_task_;
+const ::greptime::v1::DropFlowExpr&
+DdlRequest::_Internal::drop_flow(const DdlRequest* msg) {
+  return *msg->_impl_.expr_.drop_flow_;
 }
 void DdlRequest::set_allocated_create_database(::greptime::v1::CreateDatabaseExpr* create_database) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
@@ -867,35 +866,35 @@ void DdlRequest::set_allocated_truncate_table(::greptime::v1::TruncateTableExpr*
   }
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.DdlRequest.truncate_table)
 }
-void DdlRequest::set_allocated_create_flow_task(::greptime::v1::CreateFlowTaskExpr* create_flow_task) {
+void DdlRequest::set_allocated_create_flow(::greptime::v1::CreateFlowExpr* create_flow) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_expr();
-  if (create_flow_task) {
+  if (create_flow) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(create_flow_task);
+      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(create_flow);
     if (message_arena != submessage_arena) {
-      create_flow_task = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, create_flow_task, submessage_arena);
+      create_flow = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, create_flow, submessage_arena);
     }
-    set_has_create_flow_task();
-    _impl_.expr_.create_flow_task_ = create_flow_task;
+    set_has_create_flow();
+    _impl_.expr_.create_flow_ = create_flow;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DdlRequest.create_flow_task)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DdlRequest.create_flow)
 }
-void DdlRequest::set_allocated_drop_flow_task(::greptime::v1::DropFlowTaskExpr* drop_flow_task) {
+void DdlRequest::set_allocated_drop_flow(::greptime::v1::DropFlowExpr* drop_flow) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_expr();
-  if (drop_flow_task) {
+  if (drop_flow) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(drop_flow_task);
+      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(drop_flow);
     if (message_arena != submessage_arena) {
-      drop_flow_task = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, drop_flow_task, submessage_arena);
+      drop_flow = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, drop_flow, submessage_arena);
     }
-    set_has_drop_flow_task();
-    _impl_.expr_.drop_flow_task_ = drop_flow_task;
+    set_has_drop_flow();
+    _impl_.expr_.drop_flow_ = drop_flow;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DdlRequest.drop_flow_task)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DdlRequest.drop_flow)
 }
 DdlRequest::DdlRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
@@ -939,14 +938,14 @@ DdlRequest::DdlRequest(const DdlRequest& from)
           from._internal_truncate_table());
       break;
     }
-    case kCreateFlowTask: {
-      _this->_internal_mutable_create_flow_task()->::greptime::v1::CreateFlowTaskExpr::MergeFrom(
-          from._internal_create_flow_task());
+    case kCreateFlow: {
+      _this->_internal_mutable_create_flow()->::greptime::v1::CreateFlowExpr::MergeFrom(
+          from._internal_create_flow());
       break;
     }
-    case kDropFlowTask: {
-      _this->_internal_mutable_drop_flow_task()->::greptime::v1::DropFlowTaskExpr::MergeFrom(
-          from._internal_drop_flow_task());
+    case kDropFlow: {
+      _this->_internal_mutable_drop_flow()->::greptime::v1::DropFlowExpr::MergeFrom(
+          from._internal_drop_flow());
       break;
     }
     case EXPR_NOT_SET: {
@@ -1021,15 +1020,15 @@ void DdlRequest::clear_expr() {
       }
       break;
     }
-    case kCreateFlowTask: {
+    case kCreateFlow: {
       if (GetArenaForAllocation() == nullptr) {
-        delete _impl_.expr_.create_flow_task_;
+        delete _impl_.expr_.create_flow_;
       }
       break;
     }
-    case kDropFlowTask: {
+    case kDropFlow: {
       if (GetArenaForAllocation() == nullptr) {
-        delete _impl_.expr_.drop_flow_task_;
+        delete _impl_.expr_.drop_flow_;
       }
       break;
     }
@@ -1097,18 +1096,18 @@ const char* DdlRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ct
         } else
           goto handle_unusual;
         continue;
-      // .greptime.v1.CreateFlowTaskExpr create_flow_task = 8;
+      // .greptime.v1.CreateFlowExpr create_flow = 8;
       case 8:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 66)) {
-          ptr = ctx->ParseMessage(_internal_mutable_create_flow_task(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_create_flow(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
         continue;
-      // .greptime.v1.DropFlowTaskExpr drop_flow_task = 9;
+      // .greptime.v1.DropFlowExpr drop_flow = 9;
       case 9:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 74)) {
-          ptr = ctx->ParseMessage(_internal_mutable_drop_flow_task(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_drop_flow(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -1177,18 +1176,18 @@ uint8_t* DdlRequest::_InternalSerialize(
         _Internal::truncate_table(this).GetCachedSize(), target, stream);
   }
 
-  // .greptime.v1.CreateFlowTaskExpr create_flow_task = 8;
-  if (_internal_has_create_flow_task()) {
+  // .greptime.v1.CreateFlowExpr create_flow = 8;
+  if (_internal_has_create_flow()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(8, _Internal::create_flow_task(this),
-        _Internal::create_flow_task(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(8, _Internal::create_flow(this),
+        _Internal::create_flow(this).GetCachedSize(), target, stream);
   }
 
-  // .greptime.v1.DropFlowTaskExpr drop_flow_task = 9;
-  if (_internal_has_drop_flow_task()) {
+  // .greptime.v1.DropFlowExpr drop_flow = 9;
+  if (_internal_has_drop_flow()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(9, _Internal::drop_flow_task(this),
-        _Internal::drop_flow_task(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(9, _Internal::drop_flow(this),
+        _Internal::drop_flow(this).GetCachedSize(), target, stream);
   }
 
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
@@ -1243,18 +1242,18 @@ size_t DdlRequest::ByteSizeLong() const {
           *_impl_.expr_.truncate_table_);
       break;
     }
-    // .greptime.v1.CreateFlowTaskExpr create_flow_task = 8;
-    case kCreateFlowTask: {
+    // .greptime.v1.CreateFlowExpr create_flow = 8;
+    case kCreateFlow: {
       total_size += 1 +
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-          *_impl_.expr_.create_flow_task_);
+          *_impl_.expr_.create_flow_);
       break;
     }
-    // .greptime.v1.DropFlowTaskExpr drop_flow_task = 9;
-    case kDropFlowTask: {
+    // .greptime.v1.DropFlowExpr drop_flow = 9;
+    case kDropFlow: {
       total_size += 1 +
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-          *_impl_.expr_.drop_flow_task_);
+          *_impl_.expr_.drop_flow_);
       break;
     }
     case EXPR_NOT_SET: {
@@ -1305,14 +1304,14 @@ void DdlRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PRO
           from._internal_truncate_table());
       break;
     }
-    case kCreateFlowTask: {
-      _this->_internal_mutable_create_flow_task()->::greptime::v1::CreateFlowTaskExpr::MergeFrom(
-          from._internal_create_flow_task());
+    case kCreateFlow: {
+      _this->_internal_mutable_create_flow()->::greptime::v1::CreateFlowExpr::MergeFrom(
+          from._internal_create_flow());
       break;
     }
-    case kDropFlowTask: {
-      _this->_internal_mutable_drop_flow_task()->::greptime::v1::DropFlowTaskExpr::MergeFrom(
-          from._internal_drop_flow_task());
+    case kDropFlow: {
+      _this->_internal_mutable_drop_flow()->::greptime::v1::DropFlowExpr::MergeFrom(
+          from._internal_drop_flow());
       break;
     }
     case EXPR_NOT_SET: {
@@ -1348,13 +1347,13 @@ ::PROTOBUF_NAMESPACE_ID::Metadata DdlRequest::GetMetadata() const {
 
 // ===================================================================
 
-CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse() {}
-CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena)
+CreateFlowExpr_FlowOptionsEntry_DoNotUse::CreateFlowExpr_FlowOptionsEntry_DoNotUse() {}
+CreateFlowExpr_FlowOptionsEntry_DoNotUse::CreateFlowExpr_FlowOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena)
     : SuperType(arena) {}
-void CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::MergeFrom(const CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse& other) {
+void CreateFlowExpr_FlowOptionsEntry_DoNotUse::MergeFrom(const CreateFlowExpr_FlowOptionsEntry_DoNotUse& other) {
   MergeFromInternal(other);
 }
-::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowExpr_FlowOptionsEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fddl_2eproto_once,
       file_level_metadata_greptime_2fv1_2fddl_2eproto[1]);
@@ -1362,41 +1361,41 @@ ::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::
 
 // ===================================================================
 
-class CreateFlowTaskExpr::_Internal {
+class CreateFlowExpr::_Internal {
  public:
-  static const ::greptime::v1::TableName& sink_table_name(const CreateFlowTaskExpr* msg);
+  static const ::greptime::v1::TableName& sink_table_name(const CreateFlowExpr* msg);
 };
 
 const ::greptime::v1::TableName&
-CreateFlowTaskExpr::_Internal::sink_table_name(const CreateFlowTaskExpr* msg) {
+CreateFlowExpr::_Internal::sink_table_name(const CreateFlowExpr* msg) {
   return *msg->_impl_.sink_table_name_;
 }
-void CreateFlowTaskExpr::clear_source_table_names() {
+void CreateFlowExpr::clear_source_table_names() {
   _impl_.source_table_names_.Clear();
 }
-void CreateFlowTaskExpr::clear_sink_table_name() {
+void CreateFlowExpr::clear_sink_table_name() {
   if (GetArenaForAllocation() == nullptr && _impl_.sink_table_name_ != nullptr) {
     delete _impl_.sink_table_name_;
   }
   _impl_.sink_table_name_ = nullptr;
 }
-CreateFlowTaskExpr::CreateFlowTaskExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+CreateFlowExpr::CreateFlowExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
   SharedCtor(arena, is_message_owned);
   if (arena != nullptr && !is_message_owned) {
-    arena->OwnCustomDestructor(this, &CreateFlowTaskExpr::ArenaDtor);
+    arena->OwnCustomDestructor(this, &CreateFlowExpr::ArenaDtor);
   }
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.CreateFlowTaskExpr)
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.CreateFlowExpr)
 }
-CreateFlowTaskExpr::CreateFlowTaskExpr(const CreateFlowTaskExpr& from)
+CreateFlowExpr::CreateFlowExpr(const CreateFlowExpr& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
-  CreateFlowTaskExpr* const _this = this; (void)_this;
+  CreateFlowExpr* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       decltype(_impl_.source_table_names_){from._impl_.source_table_names_}
-    , /*decltype(_impl_.task_options_)*/{}
+    , /*decltype(_impl_.flow_options_)*/{}
     , decltype(_impl_.catalog_name_){}
-    , decltype(_impl_.task_name_){}
+    , decltype(_impl_.flow_name_){}
     , decltype(_impl_.expire_when_){}
     , decltype(_impl_.comment_){}
     , decltype(_impl_.sql_){}
@@ -1406,7 +1405,7 @@ CreateFlowTaskExpr::CreateFlowTaskExpr(const CreateFlowTaskExpr& from)
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  _this->_impl_.task_options_.MergeFrom(from._impl_.task_options_);
+  _this->_impl_.flow_options_.MergeFrom(from._impl_.flow_options_);
   _impl_.catalog_name_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
     _impl_.catalog_name_.Set("", GetArenaForAllocation());
@@ -1415,12 +1414,12 @@ CreateFlowTaskExpr::CreateFlowTaskExpr(const CreateFlowTaskExpr& from)
     _this->_impl_.catalog_name_.Set(from._internal_catalog_name(), 
       _this->GetArenaForAllocation());
   }
-  _impl_.task_name_.InitDefault();
+  _impl_.flow_name_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.task_name_.Set("", GetArenaForAllocation());
+    _impl_.flow_name_.Set("", GetArenaForAllocation());
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (!from._internal_task_name().empty()) {
-    _this->_impl_.task_name_.Set(from._internal_task_name(), 
+  if (!from._internal_flow_name().empty()) {
+    _this->_impl_.flow_name_.Set(from._internal_flow_name(), 
       _this->GetArenaForAllocation());
   }
   _impl_.expire_when_.InitDefault();
@@ -1453,18 +1452,18 @@ CreateFlowTaskExpr::CreateFlowTaskExpr(const CreateFlowTaskExpr& from)
   ::memcpy(&_impl_.or_replace_, &from._impl_.or_replace_,
     static_cast<size_t>(reinterpret_cast<char*>(&_impl_.create_if_not_exists_) -
     reinterpret_cast<char*>(&_impl_.or_replace_)) + sizeof(_impl_.create_if_not_exists_));
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.CreateFlowTaskExpr)
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.CreateFlowExpr)
 }
 
-inline void CreateFlowTaskExpr::SharedCtor(
+inline void CreateFlowExpr::SharedCtor(
     ::_pb::Arena* arena, bool is_message_owned) {
   (void)arena;
   (void)is_message_owned;
   new (&_impl_) Impl_{
       decltype(_impl_.source_table_names_){arena}
-    , /*decltype(_impl_.task_options_)*/{::_pbi::ArenaInitialized(), arena}
+    , /*decltype(_impl_.flow_options_)*/{::_pbi::ArenaInitialized(), arena}
     , decltype(_impl_.catalog_name_){}
-    , decltype(_impl_.task_name_){}
+    , decltype(_impl_.flow_name_){}
     , decltype(_impl_.expire_when_){}
     , decltype(_impl_.comment_){}
     , decltype(_impl_.sql_){}
@@ -1477,9 +1476,9 @@ inline void CreateFlowTaskExpr::SharedCtor(
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
     _impl_.catalog_name_.Set("", GetArenaForAllocation());
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  _impl_.task_name_.InitDefault();
+  _impl_.flow_name_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.task_name_.Set("", GetArenaForAllocation());
+    _impl_.flow_name_.Set("", GetArenaForAllocation());
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
   _impl_.expire_when_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
@@ -1495,8 +1494,8 @@ inline void CreateFlowTaskExpr::SharedCtor(
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
 }
 
-CreateFlowTaskExpr::~CreateFlowTaskExpr() {
-  // @@protoc_insertion_point(destructor:greptime.v1.CreateFlowTaskExpr)
+CreateFlowExpr::~CreateFlowExpr() {
+  // @@protoc_insertion_point(destructor:greptime.v1.CreateFlowExpr)
   if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
   (void)arena;
     ArenaDtor(this);
@@ -1505,37 +1504,37 @@ CreateFlowTaskExpr::~CreateFlowTaskExpr() {
   SharedDtor();
 }
 
-inline void CreateFlowTaskExpr::SharedDtor() {
+inline void CreateFlowExpr::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   _impl_.source_table_names_.~RepeatedPtrField();
-  _impl_.task_options_.Destruct();
-  _impl_.task_options_.~MapField();
+  _impl_.flow_options_.Destruct();
+  _impl_.flow_options_.~MapField();
   _impl_.catalog_name_.Destroy();
-  _impl_.task_name_.Destroy();
+  _impl_.flow_name_.Destroy();
   _impl_.expire_when_.Destroy();
   _impl_.comment_.Destroy();
   _impl_.sql_.Destroy();
   if (this != internal_default_instance()) delete _impl_.sink_table_name_;
 }
 
-void CreateFlowTaskExpr::ArenaDtor(void* object) {
-  CreateFlowTaskExpr* _this = reinterpret_cast< CreateFlowTaskExpr* >(object);
-  _this->_impl_.task_options_.Destruct();
+void CreateFlowExpr::ArenaDtor(void* object) {
+  CreateFlowExpr* _this = reinterpret_cast< CreateFlowExpr* >(object);
+  _this->_impl_.flow_options_.Destruct();
 }
-void CreateFlowTaskExpr::SetCachedSize(int size) const {
+void CreateFlowExpr::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
 }
 
-void CreateFlowTaskExpr::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.CreateFlowTaskExpr)
+void CreateFlowExpr::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.CreateFlowExpr)
   uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
   _impl_.source_table_names_.Clear();
-  _impl_.task_options_.Clear();
+  _impl_.flow_options_.Clear();
   _impl_.catalog_name_.ClearToEmpty();
-  _impl_.task_name_.ClearToEmpty();
+  _impl_.flow_name_.ClearToEmpty();
   _impl_.expire_when_.ClearToEmpty();
   _impl_.comment_.ClearToEmpty();
   _impl_.sql_.ClearToEmpty();
@@ -1549,7 +1548,7 @@ void CreateFlowTaskExpr::Clear() {
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
-const char* CreateFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+const char* CreateFlowExpr::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
 #define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
   while (!ctx->Done(&ptr)) {
     uint32_t tag;
@@ -1561,17 +1560,17 @@ const char* CreateFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseCon
           auto str = _internal_mutable_catalog_name();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowTaskExpr.catalog_name"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowExpr.catalog_name"));
         } else
           goto handle_unusual;
         continue;
-      // string task_name = 2;
+      // string flow_name = 2;
       case 2:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
-          auto str = _internal_mutable_task_name();
+          auto str = _internal_mutable_flow_name();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowTaskExpr.task_name"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowExpr.flow_name"));
         } else
           goto handle_unusual;
         continue;
@@ -1618,7 +1617,7 @@ const char* CreateFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseCon
           auto str = _internal_mutable_expire_when();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowTaskExpr.expire_when"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowExpr.expire_when"));
         } else
           goto handle_unusual;
         continue;
@@ -1628,7 +1627,7 @@ const char* CreateFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseCon
           auto str = _internal_mutable_comment();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowTaskExpr.comment"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowExpr.comment"));
         } else
           goto handle_unusual;
         continue;
@@ -1638,17 +1637,17 @@ const char* CreateFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseCon
           auto str = _internal_mutable_sql();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowTaskExpr.sql"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.CreateFlowExpr.sql"));
         } else
           goto handle_unusual;
         continue;
-      // map<string, string> task_options = 10;
+      // map<string, string> flow_options = 10;
       case 10:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 82)) {
           ptr -= 1;
           do {
             ptr += 1;
-            ptr = ctx->ParseMessage(&_impl_.task_options_, ptr);
+            ptr = ctx->ParseMessage(&_impl_.flow_options_, ptr);
             CHK_(ptr);
             if (!ctx->DataAvailable(ptr)) break;
           } while (::PROTOBUF_NAMESPACE_ID::internal::ExpectTag<82>(ptr));
@@ -1678,9 +1677,9 @@ const char* CreateFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseCon
 #undef CHK_
 }
 
-uint8_t* CreateFlowTaskExpr::_InternalSerialize(
+uint8_t* CreateFlowExpr::_InternalSerialize(
     uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.CreateFlowTaskExpr)
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.CreateFlowExpr)
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
@@ -1689,19 +1688,19 @@ uint8_t* CreateFlowTaskExpr::_InternalSerialize(
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
       this->_internal_catalog_name().data(), static_cast<int>(this->_internal_catalog_name().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.CreateFlowTaskExpr.catalog_name");
+      "greptime.v1.CreateFlowExpr.catalog_name");
     target = stream->WriteStringMaybeAliased(
         1, this->_internal_catalog_name(), target);
   }
 
-  // string task_name = 2;
-  if (!this->_internal_task_name().empty()) {
+  // string flow_name = 2;
+  if (!this->_internal_flow_name().empty()) {
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
-      this->_internal_task_name().data(), static_cast<int>(this->_internal_task_name().length()),
+      this->_internal_flow_name().data(), static_cast<int>(this->_internal_flow_name().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.CreateFlowTaskExpr.task_name");
+      "greptime.v1.CreateFlowExpr.flow_name");
     target = stream->WriteStringMaybeAliased(
-        2, this->_internal_task_name(), target);
+        2, this->_internal_flow_name(), target);
   }
 
   // repeated .greptime.v1.TableName source_table_names = 3;
@@ -1736,7 +1735,7 @@ uint8_t* CreateFlowTaskExpr::_InternalSerialize(
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
       this->_internal_expire_when().data(), static_cast<int>(this->_internal_expire_when().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.CreateFlowTaskExpr.expire_when");
+      "greptime.v1.CreateFlowExpr.expire_when");
     target = stream->WriteStringMaybeAliased(
         7, this->_internal_expire_when(), target);
   }
@@ -1746,7 +1745,7 @@ uint8_t* CreateFlowTaskExpr::_InternalSerialize(
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
       this->_internal_comment().data(), static_cast<int>(this->_internal_comment().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.CreateFlowTaskExpr.comment");
+      "greptime.v1.CreateFlowExpr.comment");
     target = stream->WriteStringMaybeAliased(
         8, this->_internal_comment(), target);
   }
@@ -1756,26 +1755,26 @@ uint8_t* CreateFlowTaskExpr::_InternalSerialize(
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
       this->_internal_sql().data(), static_cast<int>(this->_internal_sql().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.CreateFlowTaskExpr.sql");
+      "greptime.v1.CreateFlowExpr.sql");
     target = stream->WriteStringMaybeAliased(
         9, this->_internal_sql(), target);
   }
 
-  // map<string, string> task_options = 10;
-  if (!this->_internal_task_options().empty()) {
+  // map<string, string> flow_options = 10;
+  if (!this->_internal_flow_options().empty()) {
     using MapType = ::_pb::Map<std::string, std::string>;
-    using WireHelper = CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::Funcs;
-    const auto& map_field = this->_internal_task_options();
+    using WireHelper = CreateFlowExpr_FlowOptionsEntry_DoNotUse::Funcs;
+    const auto& map_field = this->_internal_flow_options();
     auto check_utf8 = [](const MapType::value_type& entry) {
       (void)entry;
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
         entry.first.data(), static_cast<int>(entry.first.length()),
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-        "greptime.v1.CreateFlowTaskExpr.TaskOptionsEntry.key");
+        "greptime.v1.CreateFlowExpr.FlowOptionsEntry.key");
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
         entry.second.data(), static_cast<int>(entry.second.length()),
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-        "greptime.v1.CreateFlowTaskExpr.TaskOptionsEntry.value");
+        "greptime.v1.CreateFlowExpr.FlowOptionsEntry.value");
     };
 
     if (stream->IsSerializationDeterministic() && map_field.size() > 1) {
@@ -1795,12 +1794,12 @@ uint8_t* CreateFlowTaskExpr::_InternalSerialize(
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
   }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.CreateFlowTaskExpr)
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.CreateFlowExpr)
   return target;
 }
 
-size_t CreateFlowTaskExpr::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.CreateFlowTaskExpr)
+size_t CreateFlowExpr::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.CreateFlowExpr)
   size_t total_size = 0;
 
   uint32_t cached_has_bits = 0;
@@ -1814,13 +1813,13 @@ size_t CreateFlowTaskExpr::ByteSizeLong() const {
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(msg);
   }
 
-  // map<string, string> task_options = 10;
+  // map<string, string> flow_options = 10;
   total_size += 1 *
-      ::PROTOBUF_NAMESPACE_ID::internal::FromIntSize(this->_internal_task_options_size());
+      ::PROTOBUF_NAMESPACE_ID::internal::FromIntSize(this->_internal_flow_options_size());
   for (::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >::const_iterator
-      it = this->_internal_task_options().begin();
-      it != this->_internal_task_options().end(); ++it) {
-    total_size += CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse::Funcs::ByteSizeLong(it->first, it->second);
+      it = this->_internal_flow_options().begin();
+      it != this->_internal_flow_options().end(); ++it) {
+    total_size += CreateFlowExpr_FlowOptionsEntry_DoNotUse::Funcs::ByteSizeLong(it->first, it->second);
   }
 
   // string catalog_name = 1;
@@ -1830,11 +1829,11 @@ size_t CreateFlowTaskExpr::ByteSizeLong() const {
         this->_internal_catalog_name());
   }
 
-  // string task_name = 2;
-  if (!this->_internal_task_name().empty()) {
+  // string flow_name = 2;
+  if (!this->_internal_flow_name().empty()) {
     total_size += 1 +
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
-        this->_internal_task_name());
+        this->_internal_flow_name());
   }
 
   // string expire_when = 7;
@@ -1878,28 +1877,28 @@ size_t CreateFlowTaskExpr::ByteSizeLong() const {
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData CreateFlowTaskExpr::_class_data_ = {
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData CreateFlowExpr::_class_data_ = {
     ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    CreateFlowTaskExpr::MergeImpl
+    CreateFlowExpr::MergeImpl
 };
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*CreateFlowTaskExpr::GetClassData() const { return &_class_data_; }
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*CreateFlowExpr::GetClassData() const { return &_class_data_; }
 
 
-void CreateFlowTaskExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<CreateFlowTaskExpr*>(&to_msg);
-  auto& from = static_cast<const CreateFlowTaskExpr&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.CreateFlowTaskExpr)
+void CreateFlowExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<CreateFlowExpr*>(&to_msg);
+  auto& from = static_cast<const CreateFlowExpr&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.CreateFlowExpr)
   GOOGLE_DCHECK_NE(&from, _this);
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
   _this->_impl_.source_table_names_.MergeFrom(from._impl_.source_table_names_);
-  _this->_impl_.task_options_.MergeFrom(from._impl_.task_options_);
+  _this->_impl_.flow_options_.MergeFrom(from._impl_.flow_options_);
   if (!from._internal_catalog_name().empty()) {
     _this->_internal_set_catalog_name(from._internal_catalog_name());
   }
-  if (!from._internal_task_name().empty()) {
-    _this->_internal_set_task_name(from._internal_task_name());
+  if (!from._internal_flow_name().empty()) {
+    _this->_internal_set_flow_name(from._internal_flow_name());
   }
   if (!from._internal_expire_when().empty()) {
     _this->_internal_set_expire_when(from._internal_expire_when());
@@ -1923,31 +1922,31 @@ void CreateFlowTaskExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, con
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
 
-void CreateFlowTaskExpr::CopyFrom(const CreateFlowTaskExpr& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.CreateFlowTaskExpr)
+void CreateFlowExpr::CopyFrom(const CreateFlowExpr& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.CreateFlowExpr)
   if (&from == this) return;
   Clear();
   MergeFrom(from);
 }
 
-bool CreateFlowTaskExpr::IsInitialized() const {
+bool CreateFlowExpr::IsInitialized() const {
   return true;
 }
 
-void CreateFlowTaskExpr::InternalSwap(CreateFlowTaskExpr* other) {
+void CreateFlowExpr::InternalSwap(CreateFlowExpr* other) {
   using std::swap;
   auto* lhs_arena = GetArenaForAllocation();
   auto* rhs_arena = other->GetArenaForAllocation();
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
   _impl_.source_table_names_.InternalSwap(&other->_impl_.source_table_names_);
-  _impl_.task_options_.InternalSwap(&other->_impl_.task_options_);
+  _impl_.flow_options_.InternalSwap(&other->_impl_.flow_options_);
   ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
       &_impl_.catalog_name_, lhs_arena,
       &other->_impl_.catalog_name_, rhs_arena
   );
   ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
-      &_impl_.task_name_, lhs_arena,
-      &other->_impl_.task_name_, rhs_arena
+      &_impl_.flow_name_, lhs_arena,
+      &other->_impl_.flow_name_, rhs_arena
   );
   ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
       &_impl_.expire_when_, lhs_arena,
@@ -1962,14 +1961,14 @@ void CreateFlowTaskExpr::InternalSwap(CreateFlowTaskExpr* other) {
       &other->_impl_.sql_, rhs_arena
   );
   ::PROTOBUF_NAMESPACE_ID::internal::memswap<
-      PROTOBUF_FIELD_OFFSET(CreateFlowTaskExpr, _impl_.create_if_not_exists_)
-      + sizeof(CreateFlowTaskExpr::_impl_.create_if_not_exists_)
-      - PROTOBUF_FIELD_OFFSET(CreateFlowTaskExpr, _impl_.sink_table_name_)>(
+      PROTOBUF_FIELD_OFFSET(CreateFlowExpr, _impl_.create_if_not_exists_)
+      + sizeof(CreateFlowExpr::_impl_.create_if_not_exists_)
+      - PROTOBUF_FIELD_OFFSET(CreateFlowExpr, _impl_.sink_table_name_)>(
           reinterpret_cast<char*>(&_impl_.sink_table_name_),
           reinterpret_cast<char*>(&other->_impl_.sink_table_name_));
 }
 
-::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowTaskExpr::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowExpr::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fddl_2eproto_once,
       file_level_metadata_greptime_2fv1_2fddl_2eproto[2]);
@@ -1977,22 +1976,22 @@ ::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowTaskExpr::GetMetadata() const {
 
 // ===================================================================
 
-class DropFlowTaskExpr::_Internal {
+class DropFlowExpr::_Internal {
  public:
 };
 
-DropFlowTaskExpr::DropFlowTaskExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+DropFlowExpr::DropFlowExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
   SharedCtor(arena, is_message_owned);
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.DropFlowTaskExpr)
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.DropFlowExpr)
 }
-DropFlowTaskExpr::DropFlowTaskExpr(const DropFlowTaskExpr& from)
+DropFlowExpr::DropFlowExpr(const DropFlowExpr& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
-  DropFlowTaskExpr* const _this = this; (void)_this;
+  DropFlowExpr* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       decltype(_impl_.catalog_name_){}
-    , decltype(_impl_.task_name_){}
+    , decltype(_impl_.flow_name_){}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
@@ -2004,38 +2003,38 @@ DropFlowTaskExpr::DropFlowTaskExpr(const DropFlowTaskExpr& from)
     _this->_impl_.catalog_name_.Set(from._internal_catalog_name(), 
       _this->GetArenaForAllocation());
   }
-  _impl_.task_name_.InitDefault();
+  _impl_.flow_name_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.task_name_.Set("", GetArenaForAllocation());
+    _impl_.flow_name_.Set("", GetArenaForAllocation());
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (!from._internal_task_name().empty()) {
-    _this->_impl_.task_name_.Set(from._internal_task_name(), 
+  if (!from._internal_flow_name().empty()) {
+    _this->_impl_.flow_name_.Set(from._internal_flow_name(), 
       _this->GetArenaForAllocation());
   }
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.DropFlowTaskExpr)
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.DropFlowExpr)
 }
 
-inline void DropFlowTaskExpr::SharedCtor(
+inline void DropFlowExpr::SharedCtor(
     ::_pb::Arena* arena, bool is_message_owned) {
   (void)arena;
   (void)is_message_owned;
   new (&_impl_) Impl_{
       decltype(_impl_.catalog_name_){}
-    , decltype(_impl_.task_name_){}
+    , decltype(_impl_.flow_name_){}
     , /*decltype(_impl_._cached_size_)*/{}
   };
   _impl_.catalog_name_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
     _impl_.catalog_name_.Set("", GetArenaForAllocation());
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  _impl_.task_name_.InitDefault();
+  _impl_.flow_name_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-    _impl_.task_name_.Set("", GetArenaForAllocation());
+    _impl_.flow_name_.Set("", GetArenaForAllocation());
   #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
 }
 
-DropFlowTaskExpr::~DropFlowTaskExpr() {
-  // @@protoc_insertion_point(destructor:greptime.v1.DropFlowTaskExpr)
+DropFlowExpr::~DropFlowExpr() {
+  // @@protoc_insertion_point(destructor:greptime.v1.DropFlowExpr)
   if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
   (void)arena;
     return;
@@ -2043,28 +2042,28 @@ DropFlowTaskExpr::~DropFlowTaskExpr() {
   SharedDtor();
 }
 
-inline void DropFlowTaskExpr::SharedDtor() {
+inline void DropFlowExpr::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   _impl_.catalog_name_.Destroy();
-  _impl_.task_name_.Destroy();
+  _impl_.flow_name_.Destroy();
 }
 
-void DropFlowTaskExpr::SetCachedSize(int size) const {
+void DropFlowExpr::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
 }
 
-void DropFlowTaskExpr::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.DropFlowTaskExpr)
+void DropFlowExpr::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.DropFlowExpr)
   uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
   _impl_.catalog_name_.ClearToEmpty();
-  _impl_.task_name_.ClearToEmpty();
+  _impl_.flow_name_.ClearToEmpty();
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
-const char* DropFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+const char* DropFlowExpr::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
 #define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
   while (!ctx->Done(&ptr)) {
     uint32_t tag;
@@ -2076,17 +2075,17 @@ const char* DropFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseConte
           auto str = _internal_mutable_catalog_name();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.DropFlowTaskExpr.catalog_name"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.DropFlowExpr.catalog_name"));
         } else
           goto handle_unusual;
         continue;
-      // string task_name = 2;
+      // string flow_name = 2;
       case 2:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
-          auto str = _internal_mutable_task_name();
+          auto str = _internal_mutable_flow_name();
           ptr = ::_pbi::InlineGreedyStringParser(str, ptr, ctx);
           CHK_(ptr);
-          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.DropFlowTaskExpr.task_name"));
+          CHK_(::_pbi::VerifyUTF8(str, "greptime.v1.DropFlowExpr.flow_name"));
         } else
           goto handle_unusual;
         continue;
@@ -2113,9 +2112,9 @@ const char* DropFlowTaskExpr::_InternalParse(const char* ptr, ::_pbi::ParseConte
 #undef CHK_
 }
 
-uint8_t* DropFlowTaskExpr::_InternalSerialize(
+uint8_t* DropFlowExpr::_InternalSerialize(
     uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.DropFlowTaskExpr)
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.DropFlowExpr)
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
@@ -2124,31 +2123,31 @@ uint8_t* DropFlowTaskExpr::_InternalSerialize(
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
       this->_internal_catalog_name().data(), static_cast<int>(this->_internal_catalog_name().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.DropFlowTaskExpr.catalog_name");
+      "greptime.v1.DropFlowExpr.catalog_name");
     target = stream->WriteStringMaybeAliased(
         1, this->_internal_catalog_name(), target);
   }
 
-  // string task_name = 2;
-  if (!this->_internal_task_name().empty()) {
+  // string flow_name = 2;
+  if (!this->_internal_flow_name().empty()) {
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
-      this->_internal_task_name().data(), static_cast<int>(this->_internal_task_name().length()),
+      this->_internal_flow_name().data(), static_cast<int>(this->_internal_flow_name().length()),
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-      "greptime.v1.DropFlowTaskExpr.task_name");
+      "greptime.v1.DropFlowExpr.flow_name");
     target = stream->WriteStringMaybeAliased(
-        2, this->_internal_task_name(), target);
+        2, this->_internal_flow_name(), target);
   }
 
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
   }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.DropFlowTaskExpr)
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.DropFlowExpr)
   return target;
 }
 
-size_t DropFlowTaskExpr::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.DropFlowTaskExpr)
+size_t DropFlowExpr::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.DropFlowExpr)
   size_t total_size = 0;
 
   uint32_t cached_has_bits = 0;
@@ -2162,27 +2161,27 @@ size_t DropFlowTaskExpr::ByteSizeLong() const {
         this->_internal_catalog_name());
   }
 
-  // string task_name = 2;
-  if (!this->_internal_task_name().empty()) {
+  // string flow_name = 2;
+  if (!this->_internal_flow_name().empty()) {
     total_size += 1 +
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::StringSize(
-        this->_internal_task_name());
+        this->_internal_flow_name());
   }
 
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DropFlowTaskExpr::_class_data_ = {
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DropFlowExpr::_class_data_ = {
     ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    DropFlowTaskExpr::MergeImpl
+    DropFlowExpr::MergeImpl
 };
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DropFlowTaskExpr::GetClassData() const { return &_class_data_; }
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DropFlowExpr::GetClassData() const { return &_class_data_; }
 
 
-void DropFlowTaskExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<DropFlowTaskExpr*>(&to_msg);
-  auto& from = static_cast<const DropFlowTaskExpr&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.DropFlowTaskExpr)
+void DropFlowExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<DropFlowExpr*>(&to_msg);
+  auto& from = static_cast<const DropFlowExpr&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.DropFlowExpr)
   GOOGLE_DCHECK_NE(&from, _this);
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
@@ -2190,24 +2189,24 @@ void DropFlowTaskExpr::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const
   if (!from._internal_catalog_name().empty()) {
     _this->_internal_set_catalog_name(from._internal_catalog_name());
   }
-  if (!from._internal_task_name().empty()) {
-    _this->_internal_set_task_name(from._internal_task_name());
+  if (!from._internal_flow_name().empty()) {
+    _this->_internal_set_flow_name(from._internal_flow_name());
   }
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
 
-void DropFlowTaskExpr::CopyFrom(const DropFlowTaskExpr& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.DropFlowTaskExpr)
+void DropFlowExpr::CopyFrom(const DropFlowExpr& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.DropFlowExpr)
   if (&from == this) return;
   Clear();
   MergeFrom(from);
 }
 
-bool DropFlowTaskExpr::IsInitialized() const {
+bool DropFlowExpr::IsInitialized() const {
   return true;
 }
 
-void DropFlowTaskExpr::InternalSwap(DropFlowTaskExpr* other) {
+void DropFlowExpr::InternalSwap(DropFlowExpr* other) {
   using std::swap;
   auto* lhs_arena = GetArenaForAllocation();
   auto* rhs_arena = other->GetArenaForAllocation();
@@ -2217,12 +2216,12 @@ void DropFlowTaskExpr::InternalSwap(DropFlowTaskExpr* other) {
       &other->_impl_.catalog_name_, rhs_arena
   );
   ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
-      &_impl_.task_name_, lhs_arena,
-      &other->_impl_.task_name_, rhs_arena
+      &_impl_.flow_name_, lhs_arena,
+      &other->_impl_.flow_name_, rhs_arena
   );
 }
 
-::PROTOBUF_NAMESPACE_ID::Metadata DropFlowTaskExpr::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata DropFlowExpr::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fddl_2eproto_getter, &descriptor_table_greptime_2fv1_2fddl_2eproto_once,
       file_level_metadata_greptime_2fv1_2fddl_2eproto[3]);
@@ -7184,17 +7183,17 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::DdlRequest*
 Arena::CreateMaybeMessage< ::greptime::v1::DdlRequest >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::DdlRequest >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse*
-Arena::CreateMaybeMessage< ::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse >(arena);
+template<> PROTOBUF_NOINLINE ::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse*
+Arena::CreateMaybeMessage< ::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::CreateFlowTaskExpr*
-Arena::CreateMaybeMessage< ::greptime::v1::CreateFlowTaskExpr >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::CreateFlowTaskExpr >(arena);
+template<> PROTOBUF_NOINLINE ::greptime::v1::CreateFlowExpr*
+Arena::CreateMaybeMessage< ::greptime::v1::CreateFlowExpr >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::CreateFlowExpr >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::DropFlowTaskExpr*
-Arena::CreateMaybeMessage< ::greptime::v1::DropFlowTaskExpr >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::DropFlowTaskExpr >(arena);
+template<> PROTOBUF_NOINLINE ::greptime::v1::DropFlowExpr*
+Arena::CreateMaybeMessage< ::greptime::v1::DropFlowExpr >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::DropFlowExpr >(arena);
 }
 template<> PROTOBUF_NOINLINE ::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse*
 Arena::CreateMaybeMessage< ::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse >(Arena* arena) {
diff --git a/c++/greptime/v1/ddl.pb.h b/c++/greptime/v1/ddl.pb.h
index 4e9a036b..7eedd1e5 100644
--- a/c++/greptime/v1/ddl.pb.h
+++ b/c++/greptime/v1/ddl.pb.h
@@ -78,12 +78,12 @@ extern CreateDatabaseExprDefaultTypeInternal _CreateDatabaseExpr_default_instanc
 class CreateDatabaseExpr_OptionsEntry_DoNotUse;
 struct CreateDatabaseExpr_OptionsEntry_DoNotUseDefaultTypeInternal;
 extern CreateDatabaseExpr_OptionsEntry_DoNotUseDefaultTypeInternal _CreateDatabaseExpr_OptionsEntry_DoNotUse_default_instance_;
-class CreateFlowTaskExpr;
-struct CreateFlowTaskExprDefaultTypeInternal;
-extern CreateFlowTaskExprDefaultTypeInternal _CreateFlowTaskExpr_default_instance_;
-class CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse;
-struct CreateFlowTaskExpr_TaskOptionsEntry_DoNotUseDefaultTypeInternal;
-extern CreateFlowTaskExpr_TaskOptionsEntry_DoNotUseDefaultTypeInternal _CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse_default_instance_;
+class CreateFlowExpr;
+struct CreateFlowExprDefaultTypeInternal;
+extern CreateFlowExprDefaultTypeInternal _CreateFlowExpr_default_instance_;
+class CreateFlowExpr_FlowOptionsEntry_DoNotUse;
+struct CreateFlowExpr_FlowOptionsEntry_DoNotUseDefaultTypeInternal;
+extern CreateFlowExpr_FlowOptionsEntry_DoNotUseDefaultTypeInternal _CreateFlowExpr_FlowOptionsEntry_DoNotUse_default_instance_;
 class CreateTableExpr;
 struct CreateTableExprDefaultTypeInternal;
 extern CreateTableExprDefaultTypeInternal _CreateTableExpr_default_instance_;
@@ -102,9 +102,9 @@ extern DropColumnsDefaultTypeInternal _DropColumns_default_instance_;
 class DropDatabaseExpr;
 struct DropDatabaseExprDefaultTypeInternal;
 extern DropDatabaseExprDefaultTypeInternal _DropDatabaseExpr_default_instance_;
-class DropFlowTaskExpr;
-struct DropFlowTaskExprDefaultTypeInternal;
-extern DropFlowTaskExprDefaultTypeInternal _DropFlowTaskExpr_default_instance_;
+class DropFlowExpr;
+struct DropFlowExprDefaultTypeInternal;
+extern DropFlowExprDefaultTypeInternal _DropFlowExpr_default_instance_;
 class DropTableExpr;
 struct DropTableExprDefaultTypeInternal;
 extern DropTableExprDefaultTypeInternal _DropTableExpr_default_instance_;
@@ -129,15 +129,15 @@ template<> ::greptime::v1::ChangeColumnTypes* Arena::CreateMaybeMessage<::grepti
 template<> ::greptime::v1::ColumnDef* Arena::CreateMaybeMessage<::greptime::v1::ColumnDef>(Arena*);
 template<> ::greptime::v1::CreateDatabaseExpr* Arena::CreateMaybeMessage<::greptime::v1::CreateDatabaseExpr>(Arena*);
 template<> ::greptime::v1::CreateDatabaseExpr_OptionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::CreateDatabaseExpr_OptionsEntry_DoNotUse>(Arena*);
-template<> ::greptime::v1::CreateFlowTaskExpr* Arena::CreateMaybeMessage<::greptime::v1::CreateFlowTaskExpr>(Arena*);
-template<> ::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse>(Arena*);
+template<> ::greptime::v1::CreateFlowExpr* Arena::CreateMaybeMessage<::greptime::v1::CreateFlowExpr>(Arena*);
+template<> ::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::CreateFlowExpr_FlowOptionsEntry_DoNotUse>(Arena*);
 template<> ::greptime::v1::CreateTableExpr* Arena::CreateMaybeMessage<::greptime::v1::CreateTableExpr>(Arena*);
 template<> ::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::CreateTableExpr_TableOptionsEntry_DoNotUse>(Arena*);
 template<> ::greptime::v1::DdlRequest* Arena::CreateMaybeMessage<::greptime::v1::DdlRequest>(Arena*);
 template<> ::greptime::v1::DropColumn* Arena::CreateMaybeMessage<::greptime::v1::DropColumn>(Arena*);
 template<> ::greptime::v1::DropColumns* Arena::CreateMaybeMessage<::greptime::v1::DropColumns>(Arena*);
 template<> ::greptime::v1::DropDatabaseExpr* Arena::CreateMaybeMessage<::greptime::v1::DropDatabaseExpr>(Arena*);
-template<> ::greptime::v1::DropFlowTaskExpr* Arena::CreateMaybeMessage<::greptime::v1::DropFlowTaskExpr>(Arena*);
+template<> ::greptime::v1::DropFlowExpr* Arena::CreateMaybeMessage<::greptime::v1::DropFlowExpr>(Arena*);
 template<> ::greptime::v1::DropTableExpr* Arena::CreateMaybeMessage<::greptime::v1::DropTableExpr>(Arena*);
 template<> ::greptime::v1::RenameTable* Arena::CreateMaybeMessage<::greptime::v1::RenameTable>(Arena*);
 template<> ::greptime::v1::TableId* Arena::CreateMaybeMessage<::greptime::v1::TableId>(Arena*);
@@ -222,8 +222,8 @@ class DdlRequest final :
     kAlter = 3,
     kDropTable = 4,
     kTruncateTable = 7,
-    kCreateFlowTask = 8,
-    kDropFlowTask = 9,
+    kCreateFlow = 8,
+    kDropFlow = 9,
     EXPR_NOT_SET = 0,
   };
 
@@ -310,8 +310,8 @@ class DdlRequest final :
     kAlterFieldNumber = 3,
     kDropTableFieldNumber = 4,
     kTruncateTableFieldNumber = 7,
-    kCreateFlowTaskFieldNumber = 8,
-    kDropFlowTaskFieldNumber = 9,
+    kCreateFlowFieldNumber = 8,
+    kDropFlowFieldNumber = 9,
   };
   // .greptime.v1.CreateDatabaseExpr create_database = 1;
   bool has_create_database() const;
@@ -403,41 +403,41 @@ class DdlRequest final :
       ::greptime::v1::TruncateTableExpr* truncate_table);
   ::greptime::v1::TruncateTableExpr* unsafe_arena_release_truncate_table();
 
-  // .greptime.v1.CreateFlowTaskExpr create_flow_task = 8;
-  bool has_create_flow_task() const;
+  // .greptime.v1.CreateFlowExpr create_flow = 8;
+  bool has_create_flow() const;
   private:
-  bool _internal_has_create_flow_task() const;
+  bool _internal_has_create_flow() const;
   public:
-  void clear_create_flow_task();
-  const ::greptime::v1::CreateFlowTaskExpr& create_flow_task() const;
-  PROTOBUF_NODISCARD ::greptime::v1::CreateFlowTaskExpr* release_create_flow_task();
-  ::greptime::v1::CreateFlowTaskExpr* mutable_create_flow_task();
-  void set_allocated_create_flow_task(::greptime::v1::CreateFlowTaskExpr* create_flow_task);
+  void clear_create_flow();
+  const ::greptime::v1::CreateFlowExpr& create_flow() const;
+  PROTOBUF_NODISCARD ::greptime::v1::CreateFlowExpr* release_create_flow();
+  ::greptime::v1::CreateFlowExpr* mutable_create_flow();
+  void set_allocated_create_flow(::greptime::v1::CreateFlowExpr* create_flow);
   private:
-  const ::greptime::v1::CreateFlowTaskExpr& _internal_create_flow_task() const;
-  ::greptime::v1::CreateFlowTaskExpr* _internal_mutable_create_flow_task();
+  const ::greptime::v1::CreateFlowExpr& _internal_create_flow() const;
+  ::greptime::v1::CreateFlowExpr* _internal_mutable_create_flow();
   public:
-  void unsafe_arena_set_allocated_create_flow_task(
-      ::greptime::v1::CreateFlowTaskExpr* create_flow_task);
-  ::greptime::v1::CreateFlowTaskExpr* unsafe_arena_release_create_flow_task();
+  void unsafe_arena_set_allocated_create_flow(
+      ::greptime::v1::CreateFlowExpr* create_flow);
+  ::greptime::v1::CreateFlowExpr* unsafe_arena_release_create_flow();
 
-  // .greptime.v1.DropFlowTaskExpr drop_flow_task = 9;
-  bool has_drop_flow_task() const;
+  // .greptime.v1.DropFlowExpr drop_flow = 9;
+  bool has_drop_flow() const;
   private:
-  bool _internal_has_drop_flow_task() const;
+  bool _internal_has_drop_flow() const;
   public:
-  void clear_drop_flow_task();
-  const ::greptime::v1::DropFlowTaskExpr& drop_flow_task() const;
-  PROTOBUF_NODISCARD ::greptime::v1::DropFlowTaskExpr* release_drop_flow_task();
-  ::greptime::v1::DropFlowTaskExpr* mutable_drop_flow_task();
-  void set_allocated_drop_flow_task(::greptime::v1::DropFlowTaskExpr* drop_flow_task);
+  void clear_drop_flow();
+  const ::greptime::v1::DropFlowExpr& drop_flow() const;
+  PROTOBUF_NODISCARD ::greptime::v1::DropFlowExpr* release_drop_flow();
+  ::greptime::v1::DropFlowExpr* mutable_drop_flow();
+  void set_allocated_drop_flow(::greptime::v1::DropFlowExpr* drop_flow);
   private:
-  const ::greptime::v1::DropFlowTaskExpr& _internal_drop_flow_task() const;
-  ::greptime::v1::DropFlowTaskExpr* _internal_mutable_drop_flow_task();
+  const ::greptime::v1::DropFlowExpr& _internal_drop_flow() const;
+  ::greptime::v1::DropFlowExpr* _internal_mutable_drop_flow();
   public:
-  void unsafe_arena_set_allocated_drop_flow_task(
-      ::greptime::v1::DropFlowTaskExpr* drop_flow_task);
-  ::greptime::v1::DropFlowTaskExpr* unsafe_arena_release_drop_flow_task();
+  void unsafe_arena_set_allocated_drop_flow(
+      ::greptime::v1::DropFlowExpr* drop_flow);
+  ::greptime::v1::DropFlowExpr* unsafe_arena_release_drop_flow();
 
   void clear_expr();
   ExprCase expr_case() const;
@@ -449,8 +449,8 @@ class DdlRequest final :
   void set_has_alter();
   void set_has_drop_table();
   void set_has_truncate_table();
-  void set_has_create_flow_task();
-  void set_has_drop_flow_task();
+  void set_has_create_flow();
+  void set_has_drop_flow();
 
   inline bool has_expr() const;
   inline void clear_has_expr();
@@ -467,8 +467,8 @@ class DdlRequest final :
       ::greptime::v1::AlterExpr* alter_;
       ::greptime::v1::DropTableExpr* drop_table_;
       ::greptime::v1::TruncateTableExpr* truncate_table_;
-      ::greptime::v1::CreateFlowTaskExpr* create_flow_task_;
-      ::greptime::v1::DropFlowTaskExpr* drop_flow_task_;
+      ::greptime::v1::CreateFlowExpr* create_flow_;
+      ::greptime::v1::DropFlowExpr* drop_flow_;
     } expr_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
     uint32_t _oneof_case_[1];
@@ -479,26 +479,26 @@ class DdlRequest final :
 };
 // -------------------------------------------------------------------
 
-class CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse, 
+class CreateFlowExpr_FlowOptionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateFlowExpr_FlowOptionsEntry_DoNotUse, 
     std::string, std::string,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> {
 public:
-  typedef ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse, 
+  typedef ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateFlowExpr_FlowOptionsEntry_DoNotUse, 
     std::string, std::string,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> SuperType;
-  CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse();
-  explicit PROTOBUF_CONSTEXPR CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse(
+  CreateFlowExpr_FlowOptionsEntry_DoNotUse();
+  explicit PROTOBUF_CONSTEXPR CreateFlowExpr_FlowOptionsEntry_DoNotUse(
       ::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
-  explicit CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena);
-  void MergeFrom(const CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse& other);
-  static const CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse* internal_default_instance() { return reinterpret_cast<const CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse*>(&_CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse_default_instance_); }
+  explicit CreateFlowExpr_FlowOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena);
+  void MergeFrom(const CreateFlowExpr_FlowOptionsEntry_DoNotUse& other);
+  static const CreateFlowExpr_FlowOptionsEntry_DoNotUse* internal_default_instance() { return reinterpret_cast<const CreateFlowExpr_FlowOptionsEntry_DoNotUse*>(&_CreateFlowExpr_FlowOptionsEntry_DoNotUse_default_instance_); }
   static bool ValidateKey(std::string* s) {
-    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.CreateFlowTaskExpr.TaskOptionsEntry.key");
+    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.CreateFlowExpr.FlowOptionsEntry.key");
  }
   static bool ValidateValue(std::string* s) {
-    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.CreateFlowTaskExpr.TaskOptionsEntry.value");
+    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.CreateFlowExpr.FlowOptionsEntry.value");
  }
   using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
@@ -507,24 +507,24 @@ class CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE
 
 // -------------------------------------------------------------------
 
-class CreateFlowTaskExpr final :
-    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.CreateFlowTaskExpr) */ {
+class CreateFlowExpr final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.CreateFlowExpr) */ {
  public:
-  inline CreateFlowTaskExpr() : CreateFlowTaskExpr(nullptr) {}
-  ~CreateFlowTaskExpr() override;
-  explicit PROTOBUF_CONSTEXPR CreateFlowTaskExpr(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+  inline CreateFlowExpr() : CreateFlowExpr(nullptr) {}
+  ~CreateFlowExpr() override;
+  explicit PROTOBUF_CONSTEXPR CreateFlowExpr(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
 
-  CreateFlowTaskExpr(const CreateFlowTaskExpr& from);
-  CreateFlowTaskExpr(CreateFlowTaskExpr&& from) noexcept
-    : CreateFlowTaskExpr() {
+  CreateFlowExpr(const CreateFlowExpr& from);
+  CreateFlowExpr(CreateFlowExpr&& from) noexcept
+    : CreateFlowExpr() {
     *this = ::std::move(from);
   }
 
-  inline CreateFlowTaskExpr& operator=(const CreateFlowTaskExpr& from) {
+  inline CreateFlowExpr& operator=(const CreateFlowExpr& from) {
     CopyFrom(from);
     return *this;
   }
-  inline CreateFlowTaskExpr& operator=(CreateFlowTaskExpr&& from) noexcept {
+  inline CreateFlowExpr& operator=(CreateFlowExpr&& from) noexcept {
     if (this == &from) return *this;
     if (GetOwningArena() == from.GetOwningArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -547,20 +547,20 @@ class CreateFlowTaskExpr final :
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const CreateFlowTaskExpr& default_instance() {
+  static const CreateFlowExpr& default_instance() {
     return *internal_default_instance();
   }
-  static inline const CreateFlowTaskExpr* internal_default_instance() {
-    return reinterpret_cast<const CreateFlowTaskExpr*>(
-               &_CreateFlowTaskExpr_default_instance_);
+  static inline const CreateFlowExpr* internal_default_instance() {
+    return reinterpret_cast<const CreateFlowExpr*>(
+               &_CreateFlowExpr_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
     2;
 
-  friend void swap(CreateFlowTaskExpr& a, CreateFlowTaskExpr& b) {
+  friend void swap(CreateFlowExpr& a, CreateFlowExpr& b) {
     a.Swap(&b);
   }
-  inline void Swap(CreateFlowTaskExpr* other) {
+  inline void Swap(CreateFlowExpr* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetOwningArena() != nullptr &&
@@ -573,7 +573,7 @@ class CreateFlowTaskExpr final :
       ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(CreateFlowTaskExpr* other) {
+  void UnsafeArenaSwap(CreateFlowExpr* other) {
     if (other == this) return;
     GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
     InternalSwap(other);
@@ -581,14 +581,14 @@ class CreateFlowTaskExpr final :
 
   // implements Message ----------------------------------------------
 
-  CreateFlowTaskExpr* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<CreateFlowTaskExpr>(arena);
+  CreateFlowExpr* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<CreateFlowExpr>(arena);
   }
   using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
-  void CopyFrom(const CreateFlowTaskExpr& from);
+  void CopyFrom(const CreateFlowExpr& from);
   using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
-  void MergeFrom( const CreateFlowTaskExpr& from) {
-    CreateFlowTaskExpr::MergeImpl(*this, from);
+  void MergeFrom( const CreateFlowExpr& from) {
+    CreateFlowExpr::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
@@ -606,15 +606,15 @@ class CreateFlowTaskExpr final :
   void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
   void SharedDtor();
   void SetCachedSize(int size) const final;
-  void InternalSwap(CreateFlowTaskExpr* other);
+  void InternalSwap(CreateFlowExpr* other);
 
   private:
   friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
   static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
-    return "greptime.v1.CreateFlowTaskExpr";
+    return "greptime.v1.CreateFlowExpr";
   }
   protected:
-  explicit CreateFlowTaskExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+  explicit CreateFlowExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                        bool is_message_owned = false);
   private:
   static void ArenaDtor(void* object);
@@ -632,9 +632,9 @@ class CreateFlowTaskExpr final :
 
   enum : int {
     kSourceTableNamesFieldNumber = 3,
-    kTaskOptionsFieldNumber = 10,
+    kFlowOptionsFieldNumber = 10,
     kCatalogNameFieldNumber = 1,
-    kTaskNameFieldNumber = 2,
+    kFlowNameFieldNumber = 2,
     kExpireWhenFieldNumber = 7,
     kCommentFieldNumber = 8,
     kSqlFieldNumber = 9,
@@ -660,22 +660,22 @@ class CreateFlowTaskExpr final :
   const ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::TableName >&
       source_table_names() const;
 
-  // map<string, string> task_options = 10;
-  int task_options_size() const;
+  // map<string, string> flow_options = 10;
+  int flow_options_size() const;
   private:
-  int _internal_task_options_size() const;
+  int _internal_flow_options_size() const;
   public:
-  void clear_task_options();
+  void clear_flow_options();
   private:
   const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-      _internal_task_options() const;
+      _internal_flow_options() const;
   ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-      _internal_mutable_task_options();
+      _internal_mutable_flow_options();
   public:
   const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-      task_options() const;
+      flow_options() const;
   ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-      mutable_task_options();
+      mutable_flow_options();
 
   // string catalog_name = 1;
   void clear_catalog_name();
@@ -691,18 +691,18 @@ class CreateFlowTaskExpr final :
   std::string* _internal_mutable_catalog_name();
   public:
 
-  // string task_name = 2;
-  void clear_task_name();
-  const std::string& task_name() const;
+  // string flow_name = 2;
+  void clear_flow_name();
+  const std::string& flow_name() const;
   template <typename ArgT0 = const std::string&, typename... ArgT>
-  void set_task_name(ArgT0&& arg0, ArgT... args);
-  std::string* mutable_task_name();
-  PROTOBUF_NODISCARD std::string* release_task_name();
-  void set_allocated_task_name(std::string* task_name);
+  void set_flow_name(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_flow_name();
+  PROTOBUF_NODISCARD std::string* release_flow_name();
+  void set_allocated_flow_name(std::string* flow_name);
   private:
-  const std::string& _internal_task_name() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_task_name(const std::string& value);
-  std::string* _internal_mutable_task_name();
+  const std::string& _internal_flow_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_flow_name(const std::string& value);
+  std::string* _internal_mutable_flow_name();
   public:
 
   // string expire_when = 7;
@@ -783,7 +783,7 @@ class CreateFlowTaskExpr final :
   void _internal_set_create_if_not_exists(bool value);
   public:
 
-  // @@protoc_insertion_point(class_scope:greptime.v1.CreateFlowTaskExpr)
+  // @@protoc_insertion_point(class_scope:greptime.v1.CreateFlowExpr)
  private:
   class _Internal;
 
@@ -793,12 +793,12 @@ class CreateFlowTaskExpr final :
   struct Impl_ {
     ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::TableName > source_table_names_;
     ::PROTOBUF_NAMESPACE_ID::internal::MapField<
-        CreateFlowTaskExpr_TaskOptionsEntry_DoNotUse,
+        CreateFlowExpr_FlowOptionsEntry_DoNotUse,
         std::string, std::string,
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
-        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> task_options_;
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> flow_options_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr catalog_name_;
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr task_name_;
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr flow_name_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr expire_when_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr comment_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr sql_;
@@ -812,24 +812,24 @@ class CreateFlowTaskExpr final :
 };
 // -------------------------------------------------------------------
 
-class DropFlowTaskExpr final :
-    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.DropFlowTaskExpr) */ {
+class DropFlowExpr final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.DropFlowExpr) */ {
  public:
-  inline DropFlowTaskExpr() : DropFlowTaskExpr(nullptr) {}
-  ~DropFlowTaskExpr() override;
-  explicit PROTOBUF_CONSTEXPR DropFlowTaskExpr(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+  inline DropFlowExpr() : DropFlowExpr(nullptr) {}
+  ~DropFlowExpr() override;
+  explicit PROTOBUF_CONSTEXPR DropFlowExpr(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
 
-  DropFlowTaskExpr(const DropFlowTaskExpr& from);
-  DropFlowTaskExpr(DropFlowTaskExpr&& from) noexcept
-    : DropFlowTaskExpr() {
+  DropFlowExpr(const DropFlowExpr& from);
+  DropFlowExpr(DropFlowExpr&& from) noexcept
+    : DropFlowExpr() {
     *this = ::std::move(from);
   }
 
-  inline DropFlowTaskExpr& operator=(const DropFlowTaskExpr& from) {
+  inline DropFlowExpr& operator=(const DropFlowExpr& from) {
     CopyFrom(from);
     return *this;
   }
-  inline DropFlowTaskExpr& operator=(DropFlowTaskExpr&& from) noexcept {
+  inline DropFlowExpr& operator=(DropFlowExpr&& from) noexcept {
     if (this == &from) return *this;
     if (GetOwningArena() == from.GetOwningArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -852,20 +852,20 @@ class DropFlowTaskExpr final :
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const DropFlowTaskExpr& default_instance() {
+  static const DropFlowExpr& default_instance() {
     return *internal_default_instance();
   }
-  static inline const DropFlowTaskExpr* internal_default_instance() {
-    return reinterpret_cast<const DropFlowTaskExpr*>(
-               &_DropFlowTaskExpr_default_instance_);
+  static inline const DropFlowExpr* internal_default_instance() {
+    return reinterpret_cast<const DropFlowExpr*>(
+               &_DropFlowExpr_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
     3;
 
-  friend void swap(DropFlowTaskExpr& a, DropFlowTaskExpr& b) {
+  friend void swap(DropFlowExpr& a, DropFlowExpr& b) {
     a.Swap(&b);
   }
-  inline void Swap(DropFlowTaskExpr* other) {
+  inline void Swap(DropFlowExpr* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetOwningArena() != nullptr &&
@@ -878,7 +878,7 @@ class DropFlowTaskExpr final :
       ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(DropFlowTaskExpr* other) {
+  void UnsafeArenaSwap(DropFlowExpr* other) {
     if (other == this) return;
     GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
     InternalSwap(other);
@@ -886,14 +886,14 @@ class DropFlowTaskExpr final :
 
   // implements Message ----------------------------------------------
 
-  DropFlowTaskExpr* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<DropFlowTaskExpr>(arena);
+  DropFlowExpr* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<DropFlowExpr>(arena);
   }
   using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
-  void CopyFrom(const DropFlowTaskExpr& from);
+  void CopyFrom(const DropFlowExpr& from);
   using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
-  void MergeFrom( const DropFlowTaskExpr& from) {
-    DropFlowTaskExpr::MergeImpl(*this, from);
+  void MergeFrom( const DropFlowExpr& from) {
+    DropFlowExpr::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
@@ -911,15 +911,15 @@ class DropFlowTaskExpr final :
   void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
   void SharedDtor();
   void SetCachedSize(int size) const final;
-  void InternalSwap(DropFlowTaskExpr* other);
+  void InternalSwap(DropFlowExpr* other);
 
   private:
   friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
   static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
-    return "greptime.v1.DropFlowTaskExpr";
+    return "greptime.v1.DropFlowExpr";
   }
   protected:
-  explicit DropFlowTaskExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+  explicit DropFlowExpr(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                        bool is_message_owned = false);
   public:
 
@@ -934,7 +934,7 @@ class DropFlowTaskExpr final :
 
   enum : int {
     kCatalogNameFieldNumber = 1,
-    kTaskNameFieldNumber = 2,
+    kFlowNameFieldNumber = 2,
   };
   // string catalog_name = 1;
   void clear_catalog_name();
@@ -950,21 +950,21 @@ class DropFlowTaskExpr final :
   std::string* _internal_mutable_catalog_name();
   public:
 
-  // string task_name = 2;
-  void clear_task_name();
-  const std::string& task_name() const;
+  // string flow_name = 2;
+  void clear_flow_name();
+  const std::string& flow_name() const;
   template <typename ArgT0 = const std::string&, typename... ArgT>
-  void set_task_name(ArgT0&& arg0, ArgT... args);
-  std::string* mutable_task_name();
-  PROTOBUF_NODISCARD std::string* release_task_name();
-  void set_allocated_task_name(std::string* task_name);
+  void set_flow_name(ArgT0&& arg0, ArgT... args);
+  std::string* mutable_flow_name();
+  PROTOBUF_NODISCARD std::string* release_flow_name();
+  void set_allocated_flow_name(std::string* flow_name);
   private:
-  const std::string& _internal_task_name() const;
-  inline PROTOBUF_ALWAYS_INLINE void _internal_set_task_name(const std::string& value);
-  std::string* _internal_mutable_task_name();
+  const std::string& _internal_flow_name() const;
+  inline PROTOBUF_ALWAYS_INLINE void _internal_set_flow_name(const std::string& value);
+  std::string* _internal_mutable_flow_name();
   public:
 
-  // @@protoc_insertion_point(class_scope:greptime.v1.DropFlowTaskExpr)
+  // @@protoc_insertion_point(class_scope:greptime.v1.DropFlowExpr)
  private:
   class _Internal;
 
@@ -973,7 +973,7 @@ class DropFlowTaskExpr final :
   typedef void DestructorSkippable_;
   struct Impl_ {
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr catalog_name_;
-    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr task_name_;
+    ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr flow_name_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
   };
   union { Impl_ _impl_; };
@@ -4565,151 +4565,151 @@ inline ::greptime::v1::TruncateTableExpr* DdlRequest::mutable_truncate_table() {
   return _msg;
 }
 
-// .greptime.v1.CreateFlowTaskExpr create_flow_task = 8;
-inline bool DdlRequest::_internal_has_create_flow_task() const {
-  return expr_case() == kCreateFlowTask;
+// .greptime.v1.CreateFlowExpr create_flow = 8;
+inline bool DdlRequest::_internal_has_create_flow() const {
+  return expr_case() == kCreateFlow;
 }
-inline bool DdlRequest::has_create_flow_task() const {
-  return _internal_has_create_flow_task();
+inline bool DdlRequest::has_create_flow() const {
+  return _internal_has_create_flow();
 }
-inline void DdlRequest::set_has_create_flow_task() {
-  _impl_._oneof_case_[0] = kCreateFlowTask;
+inline void DdlRequest::set_has_create_flow() {
+  _impl_._oneof_case_[0] = kCreateFlow;
 }
-inline void DdlRequest::clear_create_flow_task() {
-  if (_internal_has_create_flow_task()) {
+inline void DdlRequest::clear_create_flow() {
+  if (_internal_has_create_flow()) {
     if (GetArenaForAllocation() == nullptr) {
-      delete _impl_.expr_.create_flow_task_;
+      delete _impl_.expr_.create_flow_;
     }
     clear_has_expr();
   }
 }
-inline ::greptime::v1::CreateFlowTaskExpr* DdlRequest::release_create_flow_task() {
-  // @@protoc_insertion_point(field_release:greptime.v1.DdlRequest.create_flow_task)
-  if (_internal_has_create_flow_task()) {
+inline ::greptime::v1::CreateFlowExpr* DdlRequest::release_create_flow() {
+  // @@protoc_insertion_point(field_release:greptime.v1.DdlRequest.create_flow)
+  if (_internal_has_create_flow()) {
     clear_has_expr();
-    ::greptime::v1::CreateFlowTaskExpr* temp = _impl_.expr_.create_flow_task_;
+    ::greptime::v1::CreateFlowExpr* temp = _impl_.expr_.create_flow_;
     if (GetArenaForAllocation() != nullptr) {
       temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
     }
-    _impl_.expr_.create_flow_task_ = nullptr;
+    _impl_.expr_.create_flow_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline const ::greptime::v1::CreateFlowTaskExpr& DdlRequest::_internal_create_flow_task() const {
-  return _internal_has_create_flow_task()
-      ? *_impl_.expr_.create_flow_task_
-      : reinterpret_cast< ::greptime::v1::CreateFlowTaskExpr&>(::greptime::v1::_CreateFlowTaskExpr_default_instance_);
+inline const ::greptime::v1::CreateFlowExpr& DdlRequest::_internal_create_flow() const {
+  return _internal_has_create_flow()
+      ? *_impl_.expr_.create_flow_
+      : reinterpret_cast< ::greptime::v1::CreateFlowExpr&>(::greptime::v1::_CreateFlowExpr_default_instance_);
 }
-inline const ::greptime::v1::CreateFlowTaskExpr& DdlRequest::create_flow_task() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.DdlRequest.create_flow_task)
-  return _internal_create_flow_task();
+inline const ::greptime::v1::CreateFlowExpr& DdlRequest::create_flow() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DdlRequest.create_flow)
+  return _internal_create_flow();
 }
-inline ::greptime::v1::CreateFlowTaskExpr* DdlRequest::unsafe_arena_release_create_flow_task() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.DdlRequest.create_flow_task)
-  if (_internal_has_create_flow_task()) {
+inline ::greptime::v1::CreateFlowExpr* DdlRequest::unsafe_arena_release_create_flow() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.DdlRequest.create_flow)
+  if (_internal_has_create_flow()) {
     clear_has_expr();
-    ::greptime::v1::CreateFlowTaskExpr* temp = _impl_.expr_.create_flow_task_;
-    _impl_.expr_.create_flow_task_ = nullptr;
+    ::greptime::v1::CreateFlowExpr* temp = _impl_.expr_.create_flow_;
+    _impl_.expr_.create_flow_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void DdlRequest::unsafe_arena_set_allocated_create_flow_task(::greptime::v1::CreateFlowTaskExpr* create_flow_task) {
+inline void DdlRequest::unsafe_arena_set_allocated_create_flow(::greptime::v1::CreateFlowExpr* create_flow) {
   clear_expr();
-  if (create_flow_task) {
-    set_has_create_flow_task();
-    _impl_.expr_.create_flow_task_ = create_flow_task;
+  if (create_flow) {
+    set_has_create_flow();
+    _impl_.expr_.create_flow_ = create_flow;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.DdlRequest.create_flow_task)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.DdlRequest.create_flow)
 }
-inline ::greptime::v1::CreateFlowTaskExpr* DdlRequest::_internal_mutable_create_flow_task() {
-  if (!_internal_has_create_flow_task()) {
+inline ::greptime::v1::CreateFlowExpr* DdlRequest::_internal_mutable_create_flow() {
+  if (!_internal_has_create_flow()) {
     clear_expr();
-    set_has_create_flow_task();
-    _impl_.expr_.create_flow_task_ = CreateMaybeMessage< ::greptime::v1::CreateFlowTaskExpr >(GetArenaForAllocation());
+    set_has_create_flow();
+    _impl_.expr_.create_flow_ = CreateMaybeMessage< ::greptime::v1::CreateFlowExpr >(GetArenaForAllocation());
   }
-  return _impl_.expr_.create_flow_task_;
+  return _impl_.expr_.create_flow_;
 }
-inline ::greptime::v1::CreateFlowTaskExpr* DdlRequest::mutable_create_flow_task() {
-  ::greptime::v1::CreateFlowTaskExpr* _msg = _internal_mutable_create_flow_task();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.DdlRequest.create_flow_task)
+inline ::greptime::v1::CreateFlowExpr* DdlRequest::mutable_create_flow() {
+  ::greptime::v1::CreateFlowExpr* _msg = _internal_mutable_create_flow();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.DdlRequest.create_flow)
   return _msg;
 }
 
-// .greptime.v1.DropFlowTaskExpr drop_flow_task = 9;
-inline bool DdlRequest::_internal_has_drop_flow_task() const {
-  return expr_case() == kDropFlowTask;
+// .greptime.v1.DropFlowExpr drop_flow = 9;
+inline bool DdlRequest::_internal_has_drop_flow() const {
+  return expr_case() == kDropFlow;
 }
-inline bool DdlRequest::has_drop_flow_task() const {
-  return _internal_has_drop_flow_task();
+inline bool DdlRequest::has_drop_flow() const {
+  return _internal_has_drop_flow();
 }
-inline void DdlRequest::set_has_drop_flow_task() {
-  _impl_._oneof_case_[0] = kDropFlowTask;
+inline void DdlRequest::set_has_drop_flow() {
+  _impl_._oneof_case_[0] = kDropFlow;
 }
-inline void DdlRequest::clear_drop_flow_task() {
-  if (_internal_has_drop_flow_task()) {
+inline void DdlRequest::clear_drop_flow() {
+  if (_internal_has_drop_flow()) {
     if (GetArenaForAllocation() == nullptr) {
-      delete _impl_.expr_.drop_flow_task_;
+      delete _impl_.expr_.drop_flow_;
     }
     clear_has_expr();
   }
 }
-inline ::greptime::v1::DropFlowTaskExpr* DdlRequest::release_drop_flow_task() {
-  // @@protoc_insertion_point(field_release:greptime.v1.DdlRequest.drop_flow_task)
-  if (_internal_has_drop_flow_task()) {
+inline ::greptime::v1::DropFlowExpr* DdlRequest::release_drop_flow() {
+  // @@protoc_insertion_point(field_release:greptime.v1.DdlRequest.drop_flow)
+  if (_internal_has_drop_flow()) {
     clear_has_expr();
-    ::greptime::v1::DropFlowTaskExpr* temp = _impl_.expr_.drop_flow_task_;
+    ::greptime::v1::DropFlowExpr* temp = _impl_.expr_.drop_flow_;
     if (GetArenaForAllocation() != nullptr) {
       temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
     }
-    _impl_.expr_.drop_flow_task_ = nullptr;
+    _impl_.expr_.drop_flow_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline const ::greptime::v1::DropFlowTaskExpr& DdlRequest::_internal_drop_flow_task() const {
-  return _internal_has_drop_flow_task()
-      ? *_impl_.expr_.drop_flow_task_
-      : reinterpret_cast< ::greptime::v1::DropFlowTaskExpr&>(::greptime::v1::_DropFlowTaskExpr_default_instance_);
+inline const ::greptime::v1::DropFlowExpr& DdlRequest::_internal_drop_flow() const {
+  return _internal_has_drop_flow()
+      ? *_impl_.expr_.drop_flow_
+      : reinterpret_cast< ::greptime::v1::DropFlowExpr&>(::greptime::v1::_DropFlowExpr_default_instance_);
 }
-inline const ::greptime::v1::DropFlowTaskExpr& DdlRequest::drop_flow_task() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.DdlRequest.drop_flow_task)
-  return _internal_drop_flow_task();
+inline const ::greptime::v1::DropFlowExpr& DdlRequest::drop_flow() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DdlRequest.drop_flow)
+  return _internal_drop_flow();
 }
-inline ::greptime::v1::DropFlowTaskExpr* DdlRequest::unsafe_arena_release_drop_flow_task() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.DdlRequest.drop_flow_task)
-  if (_internal_has_drop_flow_task()) {
+inline ::greptime::v1::DropFlowExpr* DdlRequest::unsafe_arena_release_drop_flow() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.DdlRequest.drop_flow)
+  if (_internal_has_drop_flow()) {
     clear_has_expr();
-    ::greptime::v1::DropFlowTaskExpr* temp = _impl_.expr_.drop_flow_task_;
-    _impl_.expr_.drop_flow_task_ = nullptr;
+    ::greptime::v1::DropFlowExpr* temp = _impl_.expr_.drop_flow_;
+    _impl_.expr_.drop_flow_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void DdlRequest::unsafe_arena_set_allocated_drop_flow_task(::greptime::v1::DropFlowTaskExpr* drop_flow_task) {
+inline void DdlRequest::unsafe_arena_set_allocated_drop_flow(::greptime::v1::DropFlowExpr* drop_flow) {
   clear_expr();
-  if (drop_flow_task) {
-    set_has_drop_flow_task();
-    _impl_.expr_.drop_flow_task_ = drop_flow_task;
+  if (drop_flow) {
+    set_has_drop_flow();
+    _impl_.expr_.drop_flow_ = drop_flow;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.DdlRequest.drop_flow_task)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.DdlRequest.drop_flow)
 }
-inline ::greptime::v1::DropFlowTaskExpr* DdlRequest::_internal_mutable_drop_flow_task() {
-  if (!_internal_has_drop_flow_task()) {
+inline ::greptime::v1::DropFlowExpr* DdlRequest::_internal_mutable_drop_flow() {
+  if (!_internal_has_drop_flow()) {
     clear_expr();
-    set_has_drop_flow_task();
-    _impl_.expr_.drop_flow_task_ = CreateMaybeMessage< ::greptime::v1::DropFlowTaskExpr >(GetArenaForAllocation());
+    set_has_drop_flow();
+    _impl_.expr_.drop_flow_ = CreateMaybeMessage< ::greptime::v1::DropFlowExpr >(GetArenaForAllocation());
   }
-  return _impl_.expr_.drop_flow_task_;
+  return _impl_.expr_.drop_flow_;
 }
-inline ::greptime::v1::DropFlowTaskExpr* DdlRequest::mutable_drop_flow_task() {
-  ::greptime::v1::DropFlowTaskExpr* _msg = _internal_mutable_drop_flow_task();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.DdlRequest.drop_flow_task)
+inline ::greptime::v1::DropFlowExpr* DdlRequest::mutable_drop_flow() {
+  ::greptime::v1::DropFlowExpr* _msg = _internal_mutable_drop_flow();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.DdlRequest.drop_flow)
   return _msg;
 }
 
@@ -4726,44 +4726,44 @@ inline DdlRequest::ExprCase DdlRequest::expr_case() const {
 
 // -------------------------------------------------------------------
 
-// CreateFlowTaskExpr
+// CreateFlowExpr
 
 // string catalog_name = 1;
-inline void CreateFlowTaskExpr::clear_catalog_name() {
+inline void CreateFlowExpr::clear_catalog_name() {
   _impl_.catalog_name_.ClearToEmpty();
 }
-inline const std::string& CreateFlowTaskExpr::catalog_name() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.catalog_name)
+inline const std::string& CreateFlowExpr::catalog_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.catalog_name)
   return _internal_catalog_name();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void CreateFlowTaskExpr::set_catalog_name(ArgT0&& arg0, ArgT... args) {
+void CreateFlowExpr::set_catalog_name(ArgT0&& arg0, ArgT... args) {
  
  _impl_.catalog_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.catalog_name)
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.catalog_name)
 }
-inline std::string* CreateFlowTaskExpr::mutable_catalog_name() {
+inline std::string* CreateFlowExpr::mutable_catalog_name() {
   std::string* _s = _internal_mutable_catalog_name();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.catalog_name)
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.catalog_name)
   return _s;
 }
-inline const std::string& CreateFlowTaskExpr::_internal_catalog_name() const {
+inline const std::string& CreateFlowExpr::_internal_catalog_name() const {
   return _impl_.catalog_name_.Get();
 }
-inline void CreateFlowTaskExpr::_internal_set_catalog_name(const std::string& value) {
+inline void CreateFlowExpr::_internal_set_catalog_name(const std::string& value) {
   
   _impl_.catalog_name_.Set(value, GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::_internal_mutable_catalog_name() {
+inline std::string* CreateFlowExpr::_internal_mutable_catalog_name() {
   
   return _impl_.catalog_name_.Mutable(GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::release_catalog_name() {
-  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowTaskExpr.catalog_name)
+inline std::string* CreateFlowExpr::release_catalog_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowExpr.catalog_name)
   return _impl_.catalog_name_.Release();
 }
-inline void CreateFlowTaskExpr::set_allocated_catalog_name(std::string* catalog_name) {
+inline void CreateFlowExpr::set_allocated_catalog_name(std::string* catalog_name) {
   if (catalog_name != nullptr) {
     
   } else {
@@ -4775,113 +4775,113 @@ inline void CreateFlowTaskExpr::set_allocated_catalog_name(std::string* catalog_
     _impl_.catalog_name_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowTaskExpr.catalog_name)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowExpr.catalog_name)
 }
 
-// string task_name = 2;
-inline void CreateFlowTaskExpr::clear_task_name() {
-  _impl_.task_name_.ClearToEmpty();
+// string flow_name = 2;
+inline void CreateFlowExpr::clear_flow_name() {
+  _impl_.flow_name_.ClearToEmpty();
 }
-inline const std::string& CreateFlowTaskExpr::task_name() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.task_name)
-  return _internal_task_name();
+inline const std::string& CreateFlowExpr::flow_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.flow_name)
+  return _internal_flow_name();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void CreateFlowTaskExpr::set_task_name(ArgT0&& arg0, ArgT... args) {
+void CreateFlowExpr::set_flow_name(ArgT0&& arg0, ArgT... args) {
  
- _impl_.task_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.task_name)
+ _impl_.flow_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.flow_name)
 }
-inline std::string* CreateFlowTaskExpr::mutable_task_name() {
-  std::string* _s = _internal_mutable_task_name();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.task_name)
+inline std::string* CreateFlowExpr::mutable_flow_name() {
+  std::string* _s = _internal_mutable_flow_name();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.flow_name)
   return _s;
 }
-inline const std::string& CreateFlowTaskExpr::_internal_task_name() const {
-  return _impl_.task_name_.Get();
+inline const std::string& CreateFlowExpr::_internal_flow_name() const {
+  return _impl_.flow_name_.Get();
 }
-inline void CreateFlowTaskExpr::_internal_set_task_name(const std::string& value) {
+inline void CreateFlowExpr::_internal_set_flow_name(const std::string& value) {
   
-  _impl_.task_name_.Set(value, GetArenaForAllocation());
+  _impl_.flow_name_.Set(value, GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::_internal_mutable_task_name() {
+inline std::string* CreateFlowExpr::_internal_mutable_flow_name() {
   
-  return _impl_.task_name_.Mutable(GetArenaForAllocation());
+  return _impl_.flow_name_.Mutable(GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::release_task_name() {
-  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowTaskExpr.task_name)
-  return _impl_.task_name_.Release();
+inline std::string* CreateFlowExpr::release_flow_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowExpr.flow_name)
+  return _impl_.flow_name_.Release();
 }
-inline void CreateFlowTaskExpr::set_allocated_task_name(std::string* task_name) {
-  if (task_name != nullptr) {
+inline void CreateFlowExpr::set_allocated_flow_name(std::string* flow_name) {
+  if (flow_name != nullptr) {
     
   } else {
     
   }
-  _impl_.task_name_.SetAllocated(task_name, GetArenaForAllocation());
+  _impl_.flow_name_.SetAllocated(flow_name, GetArenaForAllocation());
 #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (_impl_.task_name_.IsDefault()) {
-    _impl_.task_name_.Set("", GetArenaForAllocation());
+  if (_impl_.flow_name_.IsDefault()) {
+    _impl_.flow_name_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowTaskExpr.task_name)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowExpr.flow_name)
 }
 
 // repeated .greptime.v1.TableName source_table_names = 3;
-inline int CreateFlowTaskExpr::_internal_source_table_names_size() const {
+inline int CreateFlowExpr::_internal_source_table_names_size() const {
   return _impl_.source_table_names_.size();
 }
-inline int CreateFlowTaskExpr::source_table_names_size() const {
+inline int CreateFlowExpr::source_table_names_size() const {
   return _internal_source_table_names_size();
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::mutable_source_table_names(int index) {
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.source_table_names)
+inline ::greptime::v1::TableName* CreateFlowExpr::mutable_source_table_names(int index) {
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.source_table_names)
   return _impl_.source_table_names_.Mutable(index);
 }
 inline ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::TableName >*
-CreateFlowTaskExpr::mutable_source_table_names() {
-  // @@protoc_insertion_point(field_mutable_list:greptime.v1.CreateFlowTaskExpr.source_table_names)
+CreateFlowExpr::mutable_source_table_names() {
+  // @@protoc_insertion_point(field_mutable_list:greptime.v1.CreateFlowExpr.source_table_names)
   return &_impl_.source_table_names_;
 }
-inline const ::greptime::v1::TableName& CreateFlowTaskExpr::_internal_source_table_names(int index) const {
+inline const ::greptime::v1::TableName& CreateFlowExpr::_internal_source_table_names(int index) const {
   return _impl_.source_table_names_.Get(index);
 }
-inline const ::greptime::v1::TableName& CreateFlowTaskExpr::source_table_names(int index) const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.source_table_names)
+inline const ::greptime::v1::TableName& CreateFlowExpr::source_table_names(int index) const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.source_table_names)
   return _internal_source_table_names(index);
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::_internal_add_source_table_names() {
+inline ::greptime::v1::TableName* CreateFlowExpr::_internal_add_source_table_names() {
   return _impl_.source_table_names_.Add();
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::add_source_table_names() {
+inline ::greptime::v1::TableName* CreateFlowExpr::add_source_table_names() {
   ::greptime::v1::TableName* _add = _internal_add_source_table_names();
-  // @@protoc_insertion_point(field_add:greptime.v1.CreateFlowTaskExpr.source_table_names)
+  // @@protoc_insertion_point(field_add:greptime.v1.CreateFlowExpr.source_table_names)
   return _add;
 }
 inline const ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::TableName >&
-CreateFlowTaskExpr::source_table_names() const {
-  // @@protoc_insertion_point(field_list:greptime.v1.CreateFlowTaskExpr.source_table_names)
+CreateFlowExpr::source_table_names() const {
+  // @@protoc_insertion_point(field_list:greptime.v1.CreateFlowExpr.source_table_names)
   return _impl_.source_table_names_;
 }
 
 // .greptime.v1.TableName sink_table_name = 4;
-inline bool CreateFlowTaskExpr::_internal_has_sink_table_name() const {
+inline bool CreateFlowExpr::_internal_has_sink_table_name() const {
   return this != internal_default_instance() && _impl_.sink_table_name_ != nullptr;
 }
-inline bool CreateFlowTaskExpr::has_sink_table_name() const {
+inline bool CreateFlowExpr::has_sink_table_name() const {
   return _internal_has_sink_table_name();
 }
-inline const ::greptime::v1::TableName& CreateFlowTaskExpr::_internal_sink_table_name() const {
+inline const ::greptime::v1::TableName& CreateFlowExpr::_internal_sink_table_name() const {
   const ::greptime::v1::TableName* p = _impl_.sink_table_name_;
   return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::TableName&>(
       ::greptime::v1::_TableName_default_instance_);
 }
-inline const ::greptime::v1::TableName& CreateFlowTaskExpr::sink_table_name() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.sink_table_name)
+inline const ::greptime::v1::TableName& CreateFlowExpr::sink_table_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.sink_table_name)
   return _internal_sink_table_name();
 }
-inline void CreateFlowTaskExpr::unsafe_arena_set_allocated_sink_table_name(
+inline void CreateFlowExpr::unsafe_arena_set_allocated_sink_table_name(
     ::greptime::v1::TableName* sink_table_name) {
   if (GetArenaForAllocation() == nullptr) {
     delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.sink_table_name_);
@@ -4892,9 +4892,9 @@ inline void CreateFlowTaskExpr::unsafe_arena_set_allocated_sink_table_name(
   } else {
     
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.CreateFlowTaskExpr.sink_table_name)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.CreateFlowExpr.sink_table_name)
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::release_sink_table_name() {
+inline ::greptime::v1::TableName* CreateFlowExpr::release_sink_table_name() {
   
   ::greptime::v1::TableName* temp = _impl_.sink_table_name_;
   _impl_.sink_table_name_ = nullptr;
@@ -4909,14 +4909,14 @@ inline ::greptime::v1::TableName* CreateFlowTaskExpr::release_sink_table_name()
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return temp;
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::unsafe_arena_release_sink_table_name() {
-  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowTaskExpr.sink_table_name)
+inline ::greptime::v1::TableName* CreateFlowExpr::unsafe_arena_release_sink_table_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowExpr.sink_table_name)
   
   ::greptime::v1::TableName* temp = _impl_.sink_table_name_;
   _impl_.sink_table_name_ = nullptr;
   return temp;
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::_internal_mutable_sink_table_name() {
+inline ::greptime::v1::TableName* CreateFlowExpr::_internal_mutable_sink_table_name() {
   
   if (_impl_.sink_table_name_ == nullptr) {
     auto* p = CreateMaybeMessage<::greptime::v1::TableName>(GetArenaForAllocation());
@@ -4924,12 +4924,12 @@ inline ::greptime::v1::TableName* CreateFlowTaskExpr::_internal_mutable_sink_tab
   }
   return _impl_.sink_table_name_;
 }
-inline ::greptime::v1::TableName* CreateFlowTaskExpr::mutable_sink_table_name() {
+inline ::greptime::v1::TableName* CreateFlowExpr::mutable_sink_table_name() {
   ::greptime::v1::TableName* _msg = _internal_mutable_sink_table_name();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.sink_table_name)
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.sink_table_name)
   return _msg;
 }
-inline void CreateFlowTaskExpr::set_allocated_sink_table_name(::greptime::v1::TableName* sink_table_name) {
+inline void CreateFlowExpr::set_allocated_sink_table_name(::greptime::v1::TableName* sink_table_name) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   if (message_arena == nullptr) {
     delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.sink_table_name_);
@@ -4947,85 +4947,85 @@ inline void CreateFlowTaskExpr::set_allocated_sink_table_name(::greptime::v1::Ta
     
   }
   _impl_.sink_table_name_ = sink_table_name;
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowTaskExpr.sink_table_name)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowExpr.sink_table_name)
 }
 
 // bool or_replace = 5;
-inline void CreateFlowTaskExpr::clear_or_replace() {
+inline void CreateFlowExpr::clear_or_replace() {
   _impl_.or_replace_ = false;
 }
-inline bool CreateFlowTaskExpr::_internal_or_replace() const {
+inline bool CreateFlowExpr::_internal_or_replace() const {
   return _impl_.or_replace_;
 }
-inline bool CreateFlowTaskExpr::or_replace() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.or_replace)
+inline bool CreateFlowExpr::or_replace() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.or_replace)
   return _internal_or_replace();
 }
-inline void CreateFlowTaskExpr::_internal_set_or_replace(bool value) {
+inline void CreateFlowExpr::_internal_set_or_replace(bool value) {
   
   _impl_.or_replace_ = value;
 }
-inline void CreateFlowTaskExpr::set_or_replace(bool value) {
+inline void CreateFlowExpr::set_or_replace(bool value) {
   _internal_set_or_replace(value);
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.or_replace)
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.or_replace)
 }
 
 // bool create_if_not_exists = 6;
-inline void CreateFlowTaskExpr::clear_create_if_not_exists() {
+inline void CreateFlowExpr::clear_create_if_not_exists() {
   _impl_.create_if_not_exists_ = false;
 }
-inline bool CreateFlowTaskExpr::_internal_create_if_not_exists() const {
+inline bool CreateFlowExpr::_internal_create_if_not_exists() const {
   return _impl_.create_if_not_exists_;
 }
-inline bool CreateFlowTaskExpr::create_if_not_exists() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.create_if_not_exists)
+inline bool CreateFlowExpr::create_if_not_exists() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.create_if_not_exists)
   return _internal_create_if_not_exists();
 }
-inline void CreateFlowTaskExpr::_internal_set_create_if_not_exists(bool value) {
+inline void CreateFlowExpr::_internal_set_create_if_not_exists(bool value) {
   
   _impl_.create_if_not_exists_ = value;
 }
-inline void CreateFlowTaskExpr::set_create_if_not_exists(bool value) {
+inline void CreateFlowExpr::set_create_if_not_exists(bool value) {
   _internal_set_create_if_not_exists(value);
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.create_if_not_exists)
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.create_if_not_exists)
 }
 
 // string expire_when = 7;
-inline void CreateFlowTaskExpr::clear_expire_when() {
+inline void CreateFlowExpr::clear_expire_when() {
   _impl_.expire_when_.ClearToEmpty();
 }
-inline const std::string& CreateFlowTaskExpr::expire_when() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.expire_when)
+inline const std::string& CreateFlowExpr::expire_when() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.expire_when)
   return _internal_expire_when();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void CreateFlowTaskExpr::set_expire_when(ArgT0&& arg0, ArgT... args) {
+void CreateFlowExpr::set_expire_when(ArgT0&& arg0, ArgT... args) {
  
  _impl_.expire_when_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.expire_when)
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.expire_when)
 }
-inline std::string* CreateFlowTaskExpr::mutable_expire_when() {
+inline std::string* CreateFlowExpr::mutable_expire_when() {
   std::string* _s = _internal_mutable_expire_when();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.expire_when)
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.expire_when)
   return _s;
 }
-inline const std::string& CreateFlowTaskExpr::_internal_expire_when() const {
+inline const std::string& CreateFlowExpr::_internal_expire_when() const {
   return _impl_.expire_when_.Get();
 }
-inline void CreateFlowTaskExpr::_internal_set_expire_when(const std::string& value) {
+inline void CreateFlowExpr::_internal_set_expire_when(const std::string& value) {
   
   _impl_.expire_when_.Set(value, GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::_internal_mutable_expire_when() {
+inline std::string* CreateFlowExpr::_internal_mutable_expire_when() {
   
   return _impl_.expire_when_.Mutable(GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::release_expire_when() {
-  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowTaskExpr.expire_when)
+inline std::string* CreateFlowExpr::release_expire_when() {
+  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowExpr.expire_when)
   return _impl_.expire_when_.Release();
 }
-inline void CreateFlowTaskExpr::set_allocated_expire_when(std::string* expire_when) {
+inline void CreateFlowExpr::set_allocated_expire_when(std::string* expire_when) {
   if (expire_when != nullptr) {
     
   } else {
@@ -5037,45 +5037,45 @@ inline void CreateFlowTaskExpr::set_allocated_expire_when(std::string* expire_wh
     _impl_.expire_when_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowTaskExpr.expire_when)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowExpr.expire_when)
 }
 
 // string comment = 8;
-inline void CreateFlowTaskExpr::clear_comment() {
+inline void CreateFlowExpr::clear_comment() {
   _impl_.comment_.ClearToEmpty();
 }
-inline const std::string& CreateFlowTaskExpr::comment() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.comment)
+inline const std::string& CreateFlowExpr::comment() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.comment)
   return _internal_comment();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void CreateFlowTaskExpr::set_comment(ArgT0&& arg0, ArgT... args) {
+void CreateFlowExpr::set_comment(ArgT0&& arg0, ArgT... args) {
  
  _impl_.comment_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.comment)
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.comment)
 }
-inline std::string* CreateFlowTaskExpr::mutable_comment() {
+inline std::string* CreateFlowExpr::mutable_comment() {
   std::string* _s = _internal_mutable_comment();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.comment)
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.comment)
   return _s;
 }
-inline const std::string& CreateFlowTaskExpr::_internal_comment() const {
+inline const std::string& CreateFlowExpr::_internal_comment() const {
   return _impl_.comment_.Get();
 }
-inline void CreateFlowTaskExpr::_internal_set_comment(const std::string& value) {
+inline void CreateFlowExpr::_internal_set_comment(const std::string& value) {
   
   _impl_.comment_.Set(value, GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::_internal_mutable_comment() {
+inline std::string* CreateFlowExpr::_internal_mutable_comment() {
   
   return _impl_.comment_.Mutable(GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::release_comment() {
-  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowTaskExpr.comment)
+inline std::string* CreateFlowExpr::release_comment() {
+  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowExpr.comment)
   return _impl_.comment_.Release();
 }
-inline void CreateFlowTaskExpr::set_allocated_comment(std::string* comment) {
+inline void CreateFlowExpr::set_allocated_comment(std::string* comment) {
   if (comment != nullptr) {
     
   } else {
@@ -5087,45 +5087,45 @@ inline void CreateFlowTaskExpr::set_allocated_comment(std::string* comment) {
     _impl_.comment_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowTaskExpr.comment)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowExpr.comment)
 }
 
 // string sql = 9;
-inline void CreateFlowTaskExpr::clear_sql() {
+inline void CreateFlowExpr::clear_sql() {
   _impl_.sql_.ClearToEmpty();
 }
-inline const std::string& CreateFlowTaskExpr::sql() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowTaskExpr.sql)
+inline const std::string& CreateFlowExpr::sql() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.CreateFlowExpr.sql)
   return _internal_sql();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void CreateFlowTaskExpr::set_sql(ArgT0&& arg0, ArgT... args) {
+void CreateFlowExpr::set_sql(ArgT0&& arg0, ArgT... args) {
  
  _impl_.sql_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowTaskExpr.sql)
+  // @@protoc_insertion_point(field_set:greptime.v1.CreateFlowExpr.sql)
 }
-inline std::string* CreateFlowTaskExpr::mutable_sql() {
+inline std::string* CreateFlowExpr::mutable_sql() {
   std::string* _s = _internal_mutable_sql();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowTaskExpr.sql)
+  // @@protoc_insertion_point(field_mutable:greptime.v1.CreateFlowExpr.sql)
   return _s;
 }
-inline const std::string& CreateFlowTaskExpr::_internal_sql() const {
+inline const std::string& CreateFlowExpr::_internal_sql() const {
   return _impl_.sql_.Get();
 }
-inline void CreateFlowTaskExpr::_internal_set_sql(const std::string& value) {
+inline void CreateFlowExpr::_internal_set_sql(const std::string& value) {
   
   _impl_.sql_.Set(value, GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::_internal_mutable_sql() {
+inline std::string* CreateFlowExpr::_internal_mutable_sql() {
   
   return _impl_.sql_.Mutable(GetArenaForAllocation());
 }
-inline std::string* CreateFlowTaskExpr::release_sql() {
-  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowTaskExpr.sql)
+inline std::string* CreateFlowExpr::release_sql() {
+  // @@protoc_insertion_point(field_release:greptime.v1.CreateFlowExpr.sql)
   return _impl_.sql_.Release();
 }
-inline void CreateFlowTaskExpr::set_allocated_sql(std::string* sql) {
+inline void CreateFlowExpr::set_allocated_sql(std::string* sql) {
   if (sql != nullptr) {
     
   } else {
@@ -5137,78 +5137,78 @@ inline void CreateFlowTaskExpr::set_allocated_sql(std::string* sql) {
     _impl_.sql_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowTaskExpr.sql)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.CreateFlowExpr.sql)
 }
 
-// map<string, string> task_options = 10;
-inline int CreateFlowTaskExpr::_internal_task_options_size() const {
-  return _impl_.task_options_.size();
+// map<string, string> flow_options = 10;
+inline int CreateFlowExpr::_internal_flow_options_size() const {
+  return _impl_.flow_options_.size();
 }
-inline int CreateFlowTaskExpr::task_options_size() const {
-  return _internal_task_options_size();
+inline int CreateFlowExpr::flow_options_size() const {
+  return _internal_flow_options_size();
 }
-inline void CreateFlowTaskExpr::clear_task_options() {
-  _impl_.task_options_.Clear();
+inline void CreateFlowExpr::clear_flow_options() {
+  _impl_.flow_options_.Clear();
 }
 inline const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-CreateFlowTaskExpr::_internal_task_options() const {
-  return _impl_.task_options_.GetMap();
+CreateFlowExpr::_internal_flow_options() const {
+  return _impl_.flow_options_.GetMap();
 }
 inline const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-CreateFlowTaskExpr::task_options() const {
-  // @@protoc_insertion_point(field_map:greptime.v1.CreateFlowTaskExpr.task_options)
-  return _internal_task_options();
+CreateFlowExpr::flow_options() const {
+  // @@protoc_insertion_point(field_map:greptime.v1.CreateFlowExpr.flow_options)
+  return _internal_flow_options();
 }
 inline ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-CreateFlowTaskExpr::_internal_mutable_task_options() {
-  return _impl_.task_options_.MutableMap();
+CreateFlowExpr::_internal_mutable_flow_options() {
+  return _impl_.flow_options_.MutableMap();
 }
 inline ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-CreateFlowTaskExpr::mutable_task_options() {
-  // @@protoc_insertion_point(field_mutable_map:greptime.v1.CreateFlowTaskExpr.task_options)
-  return _internal_mutable_task_options();
+CreateFlowExpr::mutable_flow_options() {
+  // @@protoc_insertion_point(field_mutable_map:greptime.v1.CreateFlowExpr.flow_options)
+  return _internal_mutable_flow_options();
 }
 
 // -------------------------------------------------------------------
 
-// DropFlowTaskExpr
+// DropFlowExpr
 
 // string catalog_name = 1;
-inline void DropFlowTaskExpr::clear_catalog_name() {
+inline void DropFlowExpr::clear_catalog_name() {
   _impl_.catalog_name_.ClearToEmpty();
 }
-inline const std::string& DropFlowTaskExpr::catalog_name() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.DropFlowTaskExpr.catalog_name)
+inline const std::string& DropFlowExpr::catalog_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DropFlowExpr.catalog_name)
   return _internal_catalog_name();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void DropFlowTaskExpr::set_catalog_name(ArgT0&& arg0, ArgT... args) {
+void DropFlowExpr::set_catalog_name(ArgT0&& arg0, ArgT... args) {
  
  _impl_.catalog_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.DropFlowTaskExpr.catalog_name)
+  // @@protoc_insertion_point(field_set:greptime.v1.DropFlowExpr.catalog_name)
 }
-inline std::string* DropFlowTaskExpr::mutable_catalog_name() {
+inline std::string* DropFlowExpr::mutable_catalog_name() {
   std::string* _s = _internal_mutable_catalog_name();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.DropFlowTaskExpr.catalog_name)
+  // @@protoc_insertion_point(field_mutable:greptime.v1.DropFlowExpr.catalog_name)
   return _s;
 }
-inline const std::string& DropFlowTaskExpr::_internal_catalog_name() const {
+inline const std::string& DropFlowExpr::_internal_catalog_name() const {
   return _impl_.catalog_name_.Get();
 }
-inline void DropFlowTaskExpr::_internal_set_catalog_name(const std::string& value) {
+inline void DropFlowExpr::_internal_set_catalog_name(const std::string& value) {
   
   _impl_.catalog_name_.Set(value, GetArenaForAllocation());
 }
-inline std::string* DropFlowTaskExpr::_internal_mutable_catalog_name() {
+inline std::string* DropFlowExpr::_internal_mutable_catalog_name() {
   
   return _impl_.catalog_name_.Mutable(GetArenaForAllocation());
 }
-inline std::string* DropFlowTaskExpr::release_catalog_name() {
-  // @@protoc_insertion_point(field_release:greptime.v1.DropFlowTaskExpr.catalog_name)
+inline std::string* DropFlowExpr::release_catalog_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.DropFlowExpr.catalog_name)
   return _impl_.catalog_name_.Release();
 }
-inline void DropFlowTaskExpr::set_allocated_catalog_name(std::string* catalog_name) {
+inline void DropFlowExpr::set_allocated_catalog_name(std::string* catalog_name) {
   if (catalog_name != nullptr) {
     
   } else {
@@ -5220,57 +5220,57 @@ inline void DropFlowTaskExpr::set_allocated_catalog_name(std::string* catalog_na
     _impl_.catalog_name_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DropFlowTaskExpr.catalog_name)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DropFlowExpr.catalog_name)
 }
 
-// string task_name = 2;
-inline void DropFlowTaskExpr::clear_task_name() {
-  _impl_.task_name_.ClearToEmpty();
+// string flow_name = 2;
+inline void DropFlowExpr::clear_flow_name() {
+  _impl_.flow_name_.ClearToEmpty();
 }
-inline const std::string& DropFlowTaskExpr::task_name() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.DropFlowTaskExpr.task_name)
-  return _internal_task_name();
+inline const std::string& DropFlowExpr::flow_name() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.DropFlowExpr.flow_name)
+  return _internal_flow_name();
 }
 template <typename ArgT0, typename... ArgT>
 inline PROTOBUF_ALWAYS_INLINE
-void DropFlowTaskExpr::set_task_name(ArgT0&& arg0, ArgT... args) {
+void DropFlowExpr::set_flow_name(ArgT0&& arg0, ArgT... args) {
  
- _impl_.task_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
-  // @@protoc_insertion_point(field_set:greptime.v1.DropFlowTaskExpr.task_name)
+ _impl_.flow_name_.Set(static_cast<ArgT0 &&>(arg0), args..., GetArenaForAllocation());
+  // @@protoc_insertion_point(field_set:greptime.v1.DropFlowExpr.flow_name)
 }
-inline std::string* DropFlowTaskExpr::mutable_task_name() {
-  std::string* _s = _internal_mutable_task_name();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.DropFlowTaskExpr.task_name)
+inline std::string* DropFlowExpr::mutable_flow_name() {
+  std::string* _s = _internal_mutable_flow_name();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.DropFlowExpr.flow_name)
   return _s;
 }
-inline const std::string& DropFlowTaskExpr::_internal_task_name() const {
-  return _impl_.task_name_.Get();
+inline const std::string& DropFlowExpr::_internal_flow_name() const {
+  return _impl_.flow_name_.Get();
 }
-inline void DropFlowTaskExpr::_internal_set_task_name(const std::string& value) {
+inline void DropFlowExpr::_internal_set_flow_name(const std::string& value) {
   
-  _impl_.task_name_.Set(value, GetArenaForAllocation());
+  _impl_.flow_name_.Set(value, GetArenaForAllocation());
 }
-inline std::string* DropFlowTaskExpr::_internal_mutable_task_name() {
+inline std::string* DropFlowExpr::_internal_mutable_flow_name() {
   
-  return _impl_.task_name_.Mutable(GetArenaForAllocation());
+  return _impl_.flow_name_.Mutable(GetArenaForAllocation());
 }
-inline std::string* DropFlowTaskExpr::release_task_name() {
-  // @@protoc_insertion_point(field_release:greptime.v1.DropFlowTaskExpr.task_name)
-  return _impl_.task_name_.Release();
+inline std::string* DropFlowExpr::release_flow_name() {
+  // @@protoc_insertion_point(field_release:greptime.v1.DropFlowExpr.flow_name)
+  return _impl_.flow_name_.Release();
 }
-inline void DropFlowTaskExpr::set_allocated_task_name(std::string* task_name) {
-  if (task_name != nullptr) {
+inline void DropFlowExpr::set_allocated_flow_name(std::string* flow_name) {
+  if (flow_name != nullptr) {
     
   } else {
     
   }
-  _impl_.task_name_.SetAllocated(task_name, GetArenaForAllocation());
+  _impl_.flow_name_.SetAllocated(flow_name, GetArenaForAllocation());
 #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  if (_impl_.task_name_.IsDefault()) {
-    _impl_.task_name_.Set("", GetArenaForAllocation());
+  if (_impl_.flow_name_.IsDefault()) {
+    _impl_.flow_name_.Set("", GetArenaForAllocation());
   }
 #endif // PROTOBUF_FORCE_COPY_DEFAULT_STRING
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DropFlowTaskExpr.task_name)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.DropFlowExpr.flow_name)
 }
 
 // -------------------------------------------------------------------
diff --git a/c++/greptime/v1/flow/server.pb.cc b/c++/greptime/v1/flow/server.pb.cc
index 02e4fd7d..b1304e64 100644
--- a/c++/greptime/v1/flow/server.pb.cc
+++ b/c++/greptime/v1/flow/server.pb.cc
@@ -91,25 +91,25 @@ struct FlowResponseDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 FlowResponseDefaultTypeInternal _FlowResponse_default_instance_;
-PROTOBUF_CONSTEXPR CreateRequest_TaskOptionsEntry_DoNotUse::CreateRequest_TaskOptionsEntry_DoNotUse(
+PROTOBUF_CONSTEXPR CreateRequest_FlowOptionsEntry_DoNotUse::CreateRequest_FlowOptionsEntry_DoNotUse(
     ::_pbi::ConstantInitialized) {}
-struct CreateRequest_TaskOptionsEntry_DoNotUseDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR CreateRequest_TaskOptionsEntry_DoNotUseDefaultTypeInternal()
+struct CreateRequest_FlowOptionsEntry_DoNotUseDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR CreateRequest_FlowOptionsEntry_DoNotUseDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~CreateRequest_TaskOptionsEntry_DoNotUseDefaultTypeInternal() {}
+  ~CreateRequest_FlowOptionsEntry_DoNotUseDefaultTypeInternal() {}
   union {
-    CreateRequest_TaskOptionsEntry_DoNotUse _instance;
+    CreateRequest_FlowOptionsEntry_DoNotUse _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateRequest_TaskOptionsEntry_DoNotUseDefaultTypeInternal _CreateRequest_TaskOptionsEntry_DoNotUse_default_instance_;
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateRequest_FlowOptionsEntry_DoNotUseDefaultTypeInternal _CreateRequest_FlowOptionsEntry_DoNotUse_default_instance_;
 PROTOBUF_CONSTEXPR CreateRequest::CreateRequest(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.source_table_ids_)*/{}
-  , /*decltype(_impl_.task_options_)*/{::_pbi::ConstantInitialized()}
+  , /*decltype(_impl_.flow_options_)*/{::_pbi::ConstantInitialized()}
   , /*decltype(_impl_.expire_when_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.comment_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
   , /*decltype(_impl_.sql_)*/{&::_pbi::fixed_address_empty_string, ::_pbi::ConstantInitialized{}}
-  , /*decltype(_impl_.task_id_)*/nullptr
+  , /*decltype(_impl_.flow_id_)*/nullptr
   , /*decltype(_impl_.sink_table_name_)*/nullptr
   , /*decltype(_impl_.create_if_not_exists_)*/false
   , /*decltype(_impl_._cached_size_)*/{}} {}
@@ -122,19 +122,19 @@ struct CreateRequestDefaultTypeInternal {
   };
 };
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateRequestDefaultTypeInternal _CreateRequest_default_instance_;
-PROTOBUF_CONSTEXPR RemoveRequest::RemoveRequest(
+PROTOBUF_CONSTEXPR DropRequest::DropRequest(
     ::_pbi::ConstantInitialized): _impl_{
-    /*decltype(_impl_.task_id_)*/nullptr
+    /*decltype(_impl_.flow_id_)*/nullptr
   , /*decltype(_impl_._cached_size_)*/{}} {}
-struct RemoveRequestDefaultTypeInternal {
-  PROTOBUF_CONSTEXPR RemoveRequestDefaultTypeInternal()
+struct DropRequestDefaultTypeInternal {
+  PROTOBUF_CONSTEXPR DropRequestDefaultTypeInternal()
       : _instance(::_pbi::ConstantInitialized{}) {}
-  ~RemoveRequestDefaultTypeInternal() {}
+  ~DropRequestDefaultTypeInternal() {}
   union {
-    RemoveRequest _instance;
+    DropRequest _instance;
   };
 };
-PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 RemoveRequestDefaultTypeInternal _RemoveRequest_default_instance_;
+PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropRequestDefaultTypeInternal _DropRequest_default_instance_;
 PROTOBUF_CONSTEXPR TaskId::TaskId(
     ::_pbi::ConstantInitialized): _impl_{
     /*decltype(_impl_.id_)*/0u
@@ -200,14 +200,14 @@ const uint32_t TableStruct_greptime_2fv1_2fflow_2fserver_2eproto::offsets[] PROT
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::FlowResponse, _impl_.affected_rows_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::FlowResponse, _impl_.extension_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::FlowResponse, _impl_.affected_tasks_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse, _has_bits_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse, _has_bits_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse, key_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse, value_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse, key_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse, value_),
   0,
   1,
   ~0u,  // no _has_bits_
@@ -216,21 +216,21 @@ const uint32_t TableStruct_greptime_2fv1_2fflow_2fserver_2eproto::offsets[] PROT
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.task_id_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.flow_id_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.source_table_ids_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.sink_table_name_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.create_if_not_exists_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.expire_when_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.comment_),
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.sql_),
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.task_options_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::CreateRequest, _impl_.flow_options_),
   ~0u,  // no _has_bits_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::RemoveRequest, _internal_metadata_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::DropRequest, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::RemoveRequest, _impl_.task_id_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::DropRequest, _impl_.flow_id_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::flow::TaskId, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -245,9 +245,9 @@ static const ::_pbi::MigrationSchema schemas[] PROTOBUF_SECTION_VARIABLE(protode
   { 15, -1, -1, sizeof(::greptime::v1::flow::FlowRequest)},
   { 24, 32, -1, sizeof(::greptime::v1::flow::FlowResponse_ExtensionEntry_DoNotUse)},
   { 34, -1, -1, sizeof(::greptime::v1::flow::FlowResponse)},
-  { 44, 52, -1, sizeof(::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse)},
+  { 44, 52, -1, sizeof(::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse)},
   { 54, -1, -1, sizeof(::greptime::v1::flow::CreateRequest)},
-  { 68, -1, -1, sizeof(::greptime::v1::flow::RemoveRequest)},
+  { 68, -1, -1, sizeof(::greptime::v1::flow::DropRequest)},
   { 75, -1, -1, sizeof(::greptime::v1::flow::TaskId)},
 };
 
@@ -257,9 +257,9 @@ static const ::_pb::Message* const file_default_instances[] = {
   &::greptime::v1::flow::_FlowRequest_default_instance_._instance,
   &::greptime::v1::flow::_FlowResponse_ExtensionEntry_DoNotUse_default_instance_._instance,
   &::greptime::v1::flow::_FlowResponse_default_instance_._instance,
-  &::greptime::v1::flow::_CreateRequest_TaskOptionsEntry_DoNotUse_default_instance_._instance,
+  &::greptime::v1::flow::_CreateRequest_FlowOptionsEntry_DoNotUse_default_instance_._instance,
   &::greptime::v1::flow::_CreateRequest_default_instance_._instance,
-  &::greptime::v1::flow::_RemoveRequest_default_instance_._instance,
+  &::greptime::v1::flow::_DropRequest_default_instance_._instance,
   &::greptime::v1::flow::_TaskId_default_instance_._instance,
 };
 
@@ -270,35 +270,34 @@ const char descriptor_table_protodef_greptime_2fv1_2fflow_2fserver_2eproto[] PRO
   "o\"C\n\016InsertRequests\0221\n\010requests\030\001 \003(\0132\037."
   "greptime.v1.flow.InsertRequest\"C\n\rInsert"
   "Request\022\021\n\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(\013"
-  "2\021.greptime.v1.Rows\"{\n\013FlowRequest\0221\n\006cr"
+  "2\021.greptime.v1.Rows\"w\n\013FlowRequest\0221\n\006cr"
   "eate\030\001 \001(\0132\037.greptime.v1.flow.CreateRequ"
-  "estH\000\0221\n\006remove\030\002 \001(\0132\037.greptime.v1.flow"
-  ".RemoveRequestH\000B\006\n\004body\"\370\001\n\014FlowRespons"
-  "e\022+\n\006header\030\001 \001(\0132\033.greptime.v1.Response"
-  "Header\022\025\n\raffected_rows\030\002 \001(\004\022@\n\textensi"
-  "on\030\003 \003(\0132-.greptime.v1.flow.FlowResponse"
-  ".ExtensionEntry\0220\n\016affected_tasks\030\004 \003(\0132"
-  "\030.greptime.v1.flow.TaskId\0320\n\016ExtensionEn"
-  "try\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\350\002\n\r"
-  "CreateRequest\022)\n\007task_id\030\001 \001(\0132\030.greptim"
-  "e.v1.flow.TaskId\022.\n\020source_table_ids\030\002 \003"
-  "(\0132\024.greptime.v1.TableId\022/\n\017sink_table_n"
-  "ame\030\003 \001(\0132\026.greptime.v1.TableName\022\034\n\024cre"
-  "ate_if_not_exists\030\004 \001(\010\022\023\n\013expire_when\030\005"
-  " \001(\t\022\017\n\007comment\030\006 \001(\t\022\013\n\003sql\030\007 \001(\t\022F\n\014ta"
-  "sk_options\030\010 \003(\01320.greptime.v1.flow.Crea"
-  "teRequest.TaskOptionsEntry\0322\n\020TaskOption"
-  "sEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\":"
-  "\n\rRemoveRequest\022)\n\007task_id\030\001 \001(\0132\030.grept"
-  "ime.v1.flow.TaskId\"\024\n\006TaskId\022\n\n\002id\030\001 \001(\r"
-  "2\264\001\n\004Flow\022S\n\022HandleCreateRemove\022\035.grepti"
-  "me.v1.flow.FlowRequest\032\036.greptime.v1.flo"
-  "w.FlowResponse\022W\n\023HandleMirrorRequest\022 ."
-  "greptime.v1.flow.InsertRequests\032\036.grepti"
-  "me.v1.flow.FlowResponseBY\n\023io.greptime.v"
-  "1.flowB\006ServerZ:github.com/GreptimeTeam/"
-  "greptime-proto/go/greptime/v1/flowb\006prot"
-  "o3"
+  "estH\000\022-\n\004drop\030\002 \001(\0132\035.greptime.v1.flow.D"
+  "ropRequestH\000B\006\n\004body\"\370\001\n\014FlowResponse\022+\n"
+  "\006header\030\001 \001(\0132\033.greptime.v1.ResponseHead"
+  "er\022\025\n\raffected_rows\030\002 \001(\004\022@\n\textension\030\003"
+  " \003(\0132-.greptime.v1.flow.FlowResponse.Ext"
+  "ensionEntry\0220\n\016affected_tasks\030\004 \003(\0132\030.gr"
+  "eptime.v1.flow.TaskId\0320\n\016ExtensionEntry\022"
+  "\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\350\002\n\rCrea"
+  "teRequest\022)\n\007flow_id\030\001 \001(\0132\030.greptime.v1"
+  ".flow.TaskId\022.\n\020source_table_ids\030\002 \003(\0132\024"
+  ".greptime.v1.TableId\022/\n\017sink_table_name\030"
+  "\003 \001(\0132\026.greptime.v1.TableName\022\034\n\024create_"
+  "if_not_exists\030\004 \001(\010\022\023\n\013expire_when\030\005 \001(\t"
+  "\022\017\n\007comment\030\006 \001(\t\022\013\n\003sql\030\007 \001(\t\022F\n\014flow_o"
+  "ptions\030\010 \003(\01320.greptime.v1.flow.CreateRe"
+  "quest.FlowOptionsEntry\0322\n\020FlowOptionsEnt"
+  "ry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"8\n\013Dr"
+  "opRequest\022)\n\007flow_id\030\001 \001(\0132\030.greptime.v1"
+  ".flow.TaskId\"\024\n\006TaskId\022\n\n\002id\030\001 \001(\r2\264\001\n\004F"
+  "low\022S\n\022HandleCreateRemove\022\035.greptime.v1."
+  "flow.FlowRequest\032\036.greptime.v1.flow.Flow"
+  "Response\022W\n\023HandleMirrorRequest\022 .grepti"
+  "me.v1.flow.InsertRequests\032\036.greptime.v1."
+  "flow.FlowResponseBY\n\023io.greptime.v1.flow"
+  "B\006ServerZ:github.com/GreptimeTeam/grepti"
+  "me-proto/go/greptime/v1/flowb\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_deps[3] = {
   &::descriptor_table_greptime_2fv1_2fcommon_2eproto,
@@ -307,7 +306,7 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fflo
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto = {
-    false, false, 1362, descriptor_table_protodef_greptime_2fv1_2fflow_2fserver_2eproto,
+    false, false, 1356, descriptor_table_protodef_greptime_2fv1_2fflow_2fserver_2eproto,
     "greptime/v1/flow/server.proto",
     &descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_once, descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_deps, 3, 9,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fflow_2fserver_2eproto::offsets,
@@ -744,16 +743,16 @@ ::PROTOBUF_NAMESPACE_ID::Metadata InsertRequest::GetMetadata() const {
 class FlowRequest::_Internal {
  public:
   static const ::greptime::v1::flow::CreateRequest& create(const FlowRequest* msg);
-  static const ::greptime::v1::flow::RemoveRequest& remove(const FlowRequest* msg);
+  static const ::greptime::v1::flow::DropRequest& drop(const FlowRequest* msg);
 };
 
 const ::greptime::v1::flow::CreateRequest&
 FlowRequest::_Internal::create(const FlowRequest* msg) {
   return *msg->_impl_.body_.create_;
 }
-const ::greptime::v1::flow::RemoveRequest&
-FlowRequest::_Internal::remove(const FlowRequest* msg) {
-  return *msg->_impl_.body_.remove_;
+const ::greptime::v1::flow::DropRequest&
+FlowRequest::_Internal::drop(const FlowRequest* msg) {
+  return *msg->_impl_.body_.drop_;
 }
 void FlowRequest::set_allocated_create(::greptime::v1::flow::CreateRequest* create) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
@@ -770,20 +769,20 @@ void FlowRequest::set_allocated_create(::greptime::v1::flow::CreateRequest* crea
   }
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.FlowRequest.create)
 }
-void FlowRequest::set_allocated_remove(::greptime::v1::flow::RemoveRequest* remove) {
+void FlowRequest::set_allocated_drop(::greptime::v1::flow::DropRequest* drop) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   clear_body();
-  if (remove) {
+  if (drop) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(remove);
+      ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(drop);
     if (message_arena != submessage_arena) {
-      remove = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, remove, submessage_arena);
+      drop = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, drop, submessage_arena);
     }
-    set_has_remove();
-    _impl_.body_.remove_ = remove;
+    set_has_drop();
+    _impl_.body_.drop_ = drop;
   }
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.FlowRequest.remove)
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.FlowRequest.drop)
 }
 FlowRequest::FlowRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
@@ -807,9 +806,9 @@ FlowRequest::FlowRequest(const FlowRequest& from)
           from._internal_create());
       break;
     }
-    case kRemove: {
-      _this->_internal_mutable_remove()->::greptime::v1::flow::RemoveRequest::MergeFrom(
-          from._internal_remove());
+    case kDrop: {
+      _this->_internal_mutable_drop()->::greptime::v1::flow::DropRequest::MergeFrom(
+          from._internal_drop());
       break;
     }
     case BODY_NOT_SET: {
@@ -860,9 +859,9 @@ void FlowRequest::clear_body() {
       }
       break;
     }
-    case kRemove: {
+    case kDrop: {
       if (GetArenaForAllocation() == nullptr) {
-        delete _impl_.body_.remove_;
+        delete _impl_.body_.drop_;
       }
       break;
     }
@@ -898,10 +897,10 @@ const char* FlowRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* c
         } else
           goto handle_unusual;
         continue;
-      // .greptime.v1.flow.RemoveRequest remove = 2;
+      // .greptime.v1.flow.DropRequest drop = 2;
       case 2:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 18)) {
-          ptr = ctx->ParseMessage(_internal_mutable_remove(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_drop(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -942,11 +941,11 @@ uint8_t* FlowRequest::_InternalSerialize(
         _Internal::create(this).GetCachedSize(), target, stream);
   }
 
-  // .greptime.v1.flow.RemoveRequest remove = 2;
-  if (_internal_has_remove()) {
+  // .greptime.v1.flow.DropRequest drop = 2;
+  if (_internal_has_drop()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(2, _Internal::remove(this),
-        _Internal::remove(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(2, _Internal::drop(this),
+        _Internal::drop(this).GetCachedSize(), target, stream);
   }
 
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
@@ -973,11 +972,11 @@ size_t FlowRequest::ByteSizeLong() const {
           *_impl_.body_.create_);
       break;
     }
-    // .greptime.v1.flow.RemoveRequest remove = 2;
-    case kRemove: {
+    // .greptime.v1.flow.DropRequest drop = 2;
+    case kDrop: {
       total_size += 1 +
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-          *_impl_.body_.remove_);
+          *_impl_.body_.drop_);
       break;
     }
     case BODY_NOT_SET: {
@@ -1008,9 +1007,9 @@ void FlowRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PR
           from._internal_create());
       break;
     }
-    case kRemove: {
-      _this->_internal_mutable_remove()->::greptime::v1::flow::RemoveRequest::MergeFrom(
-          from._internal_remove());
+    case kDrop: {
+      _this->_internal_mutable_drop()->::greptime::v1::flow::DropRequest::MergeFrom(
+          from._internal_drop());
       break;
     }
     case BODY_NOT_SET: {
@@ -1388,13 +1387,13 @@ ::PROTOBUF_NAMESPACE_ID::Metadata FlowResponse::GetMetadata() const {
 
 // ===================================================================
 
-CreateRequest_TaskOptionsEntry_DoNotUse::CreateRequest_TaskOptionsEntry_DoNotUse() {}
-CreateRequest_TaskOptionsEntry_DoNotUse::CreateRequest_TaskOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena)
+CreateRequest_FlowOptionsEntry_DoNotUse::CreateRequest_FlowOptionsEntry_DoNotUse() {}
+CreateRequest_FlowOptionsEntry_DoNotUse::CreateRequest_FlowOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena)
     : SuperType(arena) {}
-void CreateRequest_TaskOptionsEntry_DoNotUse::MergeFrom(const CreateRequest_TaskOptionsEntry_DoNotUse& other) {
+void CreateRequest_FlowOptionsEntry_DoNotUse::MergeFrom(const CreateRequest_FlowOptionsEntry_DoNotUse& other) {
   MergeFromInternal(other);
 }
-::PROTOBUF_NAMESPACE_ID::Metadata CreateRequest_TaskOptionsEntry_DoNotUse::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata CreateRequest_FlowOptionsEntry_DoNotUse::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_once,
       file_level_metadata_greptime_2fv1_2fflow_2fserver_2eproto[5]);
@@ -1404,13 +1403,13 @@ ::PROTOBUF_NAMESPACE_ID::Metadata CreateRequest_TaskOptionsEntry_DoNotUse::GetMe
 
 class CreateRequest::_Internal {
  public:
-  static const ::greptime::v1::flow::TaskId& task_id(const CreateRequest* msg);
+  static const ::greptime::v1::flow::TaskId& flow_id(const CreateRequest* msg);
   static const ::greptime::v1::TableName& sink_table_name(const CreateRequest* msg);
 };
 
 const ::greptime::v1::flow::TaskId&
-CreateRequest::_Internal::task_id(const CreateRequest* msg) {
-  return *msg->_impl_.task_id_;
+CreateRequest::_Internal::flow_id(const CreateRequest* msg) {
+  return *msg->_impl_.flow_id_;
 }
 const ::greptime::v1::TableName&
 CreateRequest::_Internal::sink_table_name(const CreateRequest* msg) {
@@ -1439,17 +1438,17 @@ CreateRequest::CreateRequest(const CreateRequest& from)
   CreateRequest* const _this = this; (void)_this;
   new (&_impl_) Impl_{
       decltype(_impl_.source_table_ids_){from._impl_.source_table_ids_}
-    , /*decltype(_impl_.task_options_)*/{}
+    , /*decltype(_impl_.flow_options_)*/{}
     , decltype(_impl_.expire_when_){}
     , decltype(_impl_.comment_){}
     , decltype(_impl_.sql_){}
-    , decltype(_impl_.task_id_){nullptr}
+    , decltype(_impl_.flow_id_){nullptr}
     , decltype(_impl_.sink_table_name_){nullptr}
     , decltype(_impl_.create_if_not_exists_){}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  _this->_impl_.task_options_.MergeFrom(from._impl_.task_options_);
+  _this->_impl_.flow_options_.MergeFrom(from._impl_.flow_options_);
   _impl_.expire_when_.InitDefault();
   #ifdef PROTOBUF_FORCE_COPY_DEFAULT_STRING
     _impl_.expire_when_.Set("", GetArenaForAllocation());
@@ -1474,8 +1473,8 @@ CreateRequest::CreateRequest(const CreateRequest& from)
     _this->_impl_.sql_.Set(from._internal_sql(), 
       _this->GetArenaForAllocation());
   }
-  if (from._internal_has_task_id()) {
-    _this->_impl_.task_id_ = new ::greptime::v1::flow::TaskId(*from._impl_.task_id_);
+  if (from._internal_has_flow_id()) {
+    _this->_impl_.flow_id_ = new ::greptime::v1::flow::TaskId(*from._impl_.flow_id_);
   }
   if (from._internal_has_sink_table_name()) {
     _this->_impl_.sink_table_name_ = new ::greptime::v1::TableName(*from._impl_.sink_table_name_);
@@ -1490,11 +1489,11 @@ inline void CreateRequest::SharedCtor(
   (void)is_message_owned;
   new (&_impl_) Impl_{
       decltype(_impl_.source_table_ids_){arena}
-    , /*decltype(_impl_.task_options_)*/{::_pbi::ArenaInitialized(), arena}
+    , /*decltype(_impl_.flow_options_)*/{::_pbi::ArenaInitialized(), arena}
     , decltype(_impl_.expire_when_){}
     , decltype(_impl_.comment_){}
     , decltype(_impl_.sql_){}
-    , decltype(_impl_.task_id_){nullptr}
+    , decltype(_impl_.flow_id_){nullptr}
     , decltype(_impl_.sink_table_name_){nullptr}
     , decltype(_impl_.create_if_not_exists_){false}
     , /*decltype(_impl_._cached_size_)*/{}
@@ -1526,18 +1525,18 @@ CreateRequest::~CreateRequest() {
 inline void CreateRequest::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
   _impl_.source_table_ids_.~RepeatedPtrField();
-  _impl_.task_options_.Destruct();
-  _impl_.task_options_.~MapField();
+  _impl_.flow_options_.Destruct();
+  _impl_.flow_options_.~MapField();
   _impl_.expire_when_.Destroy();
   _impl_.comment_.Destroy();
   _impl_.sql_.Destroy();
-  if (this != internal_default_instance()) delete _impl_.task_id_;
+  if (this != internal_default_instance()) delete _impl_.flow_id_;
   if (this != internal_default_instance()) delete _impl_.sink_table_name_;
 }
 
 void CreateRequest::ArenaDtor(void* object) {
   CreateRequest* _this = reinterpret_cast< CreateRequest* >(object);
-  _this->_impl_.task_options_.Destruct();
+  _this->_impl_.flow_options_.Destruct();
 }
 void CreateRequest::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
@@ -1550,14 +1549,14 @@ void CreateRequest::Clear() {
   (void) cached_has_bits;
 
   _impl_.source_table_ids_.Clear();
-  _impl_.task_options_.Clear();
+  _impl_.flow_options_.Clear();
   _impl_.expire_when_.ClearToEmpty();
   _impl_.comment_.ClearToEmpty();
   _impl_.sql_.ClearToEmpty();
-  if (GetArenaForAllocation() == nullptr && _impl_.task_id_ != nullptr) {
-    delete _impl_.task_id_;
+  if (GetArenaForAllocation() == nullptr && _impl_.flow_id_ != nullptr) {
+    delete _impl_.flow_id_;
   }
-  _impl_.task_id_ = nullptr;
+  _impl_.flow_id_ = nullptr;
   if (GetArenaForAllocation() == nullptr && _impl_.sink_table_name_ != nullptr) {
     delete _impl_.sink_table_name_;
   }
@@ -1572,10 +1571,10 @@ const char* CreateRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext*
     uint32_t tag;
     ptr = ::_pbi::ReadTag(ptr, &tag);
     switch (tag >> 3) {
-      // .greptime.v1.flow.TaskId task_id = 1;
+      // .greptime.v1.flow.TaskId flow_id = 1;
       case 1:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
-          ptr = ctx->ParseMessage(_internal_mutable_task_id(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_flow_id(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -1639,13 +1638,13 @@ const char* CreateRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext*
         } else
           goto handle_unusual;
         continue;
-      // map<string, string> task_options = 8;
+      // map<string, string> flow_options = 8;
       case 8:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 66)) {
           ptr -= 1;
           do {
             ptr += 1;
-            ptr = ctx->ParseMessage(&_impl_.task_options_, ptr);
+            ptr = ctx->ParseMessage(&_impl_.flow_options_, ptr);
             CHK_(ptr);
             if (!ctx->DataAvailable(ptr)) break;
           } while (::PROTOBUF_NAMESPACE_ID::internal::ExpectTag<66>(ptr));
@@ -1681,11 +1680,11 @@ uint8_t* CreateRequest::_InternalSerialize(
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  // .greptime.v1.flow.TaskId task_id = 1;
-  if (this->_internal_has_task_id()) {
+  // .greptime.v1.flow.TaskId flow_id = 1;
+  if (this->_internal_has_flow_id()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(1, _Internal::task_id(this),
-        _Internal::task_id(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(1, _Internal::flow_id(this),
+        _Internal::flow_id(this).GetCachedSize(), target, stream);
   }
 
   // repeated .greptime.v1.TableId source_table_ids = 2;
@@ -1739,21 +1738,21 @@ uint8_t* CreateRequest::_InternalSerialize(
         7, this->_internal_sql(), target);
   }
 
-  // map<string, string> task_options = 8;
-  if (!this->_internal_task_options().empty()) {
+  // map<string, string> flow_options = 8;
+  if (!this->_internal_flow_options().empty()) {
     using MapType = ::_pb::Map<std::string, std::string>;
-    using WireHelper = CreateRequest_TaskOptionsEntry_DoNotUse::Funcs;
-    const auto& map_field = this->_internal_task_options();
+    using WireHelper = CreateRequest_FlowOptionsEntry_DoNotUse::Funcs;
+    const auto& map_field = this->_internal_flow_options();
     auto check_utf8 = [](const MapType::value_type& entry) {
       (void)entry;
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
         entry.first.data(), static_cast<int>(entry.first.length()),
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-        "greptime.v1.flow.CreateRequest.TaskOptionsEntry.key");
+        "greptime.v1.flow.CreateRequest.FlowOptionsEntry.key");
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(
         entry.second.data(), static_cast<int>(entry.second.length()),
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::SERIALIZE,
-        "greptime.v1.flow.CreateRequest.TaskOptionsEntry.value");
+        "greptime.v1.flow.CreateRequest.FlowOptionsEntry.value");
     };
 
     if (stream->IsSerializationDeterministic() && map_field.size() > 1) {
@@ -1792,13 +1791,13 @@ size_t CreateRequest::ByteSizeLong() const {
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(msg);
   }
 
-  // map<string, string> task_options = 8;
+  // map<string, string> flow_options = 8;
   total_size += 1 *
-      ::PROTOBUF_NAMESPACE_ID::internal::FromIntSize(this->_internal_task_options_size());
+      ::PROTOBUF_NAMESPACE_ID::internal::FromIntSize(this->_internal_flow_options_size());
   for (::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >::const_iterator
-      it = this->_internal_task_options().begin();
-      it != this->_internal_task_options().end(); ++it) {
-    total_size += CreateRequest_TaskOptionsEntry_DoNotUse::Funcs::ByteSizeLong(it->first, it->second);
+      it = this->_internal_flow_options().begin();
+      it != this->_internal_flow_options().end(); ++it) {
+    total_size += CreateRequest_FlowOptionsEntry_DoNotUse::Funcs::ByteSizeLong(it->first, it->second);
   }
 
   // string expire_when = 5;
@@ -1822,11 +1821,11 @@ size_t CreateRequest::ByteSizeLong() const {
         this->_internal_sql());
   }
 
-  // .greptime.v1.flow.TaskId task_id = 1;
-  if (this->_internal_has_task_id()) {
+  // .greptime.v1.flow.TaskId flow_id = 1;
+  if (this->_internal_has_flow_id()) {
     total_size += 1 +
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-        *_impl_.task_id_);
+        *_impl_.flow_id_);
   }
 
   // .greptime.v1.TableName sink_table_name = 3;
@@ -1860,7 +1859,7 @@ void CreateRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::
   (void) cached_has_bits;
 
   _this->_impl_.source_table_ids_.MergeFrom(from._impl_.source_table_ids_);
-  _this->_impl_.task_options_.MergeFrom(from._impl_.task_options_);
+  _this->_impl_.flow_options_.MergeFrom(from._impl_.flow_options_);
   if (!from._internal_expire_when().empty()) {
     _this->_internal_set_expire_when(from._internal_expire_when());
   }
@@ -1870,9 +1869,9 @@ void CreateRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::
   if (!from._internal_sql().empty()) {
     _this->_internal_set_sql(from._internal_sql());
   }
-  if (from._internal_has_task_id()) {
-    _this->_internal_mutable_task_id()->::greptime::v1::flow::TaskId::MergeFrom(
-        from._internal_task_id());
+  if (from._internal_has_flow_id()) {
+    _this->_internal_mutable_flow_id()->::greptime::v1::flow::TaskId::MergeFrom(
+        from._internal_flow_id());
   }
   if (from._internal_has_sink_table_name()) {
     _this->_internal_mutable_sink_table_name()->::greptime::v1::TableName::MergeFrom(
@@ -1901,7 +1900,7 @@ void CreateRequest::InternalSwap(CreateRequest* other) {
   auto* rhs_arena = other->GetArenaForAllocation();
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
   _impl_.source_table_ids_.InternalSwap(&other->_impl_.source_table_ids_);
-  _impl_.task_options_.InternalSwap(&other->_impl_.task_options_);
+  _impl_.flow_options_.InternalSwap(&other->_impl_.flow_options_);
   ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr::InternalSwap(
       &_impl_.expire_when_, lhs_arena,
       &other->_impl_.expire_when_, rhs_arena
@@ -1917,9 +1916,9 @@ void CreateRequest::InternalSwap(CreateRequest* other) {
   ::PROTOBUF_NAMESPACE_ID::internal::memswap<
       PROTOBUF_FIELD_OFFSET(CreateRequest, _impl_.create_if_not_exists_)
       + sizeof(CreateRequest::_impl_.create_if_not_exists_)
-      - PROTOBUF_FIELD_OFFSET(CreateRequest, _impl_.task_id_)>(
-          reinterpret_cast<char*>(&_impl_.task_id_),
-          reinterpret_cast<char*>(&other->_impl_.task_id_));
+      - PROTOBUF_FIELD_OFFSET(CreateRequest, _impl_.flow_id_)>(
+          reinterpret_cast<char*>(&_impl_.flow_id_),
+          reinterpret_cast<char*>(&other->_impl_.flow_id_));
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata CreateRequest::GetMetadata() const {
@@ -1930,47 +1929,47 @@ ::PROTOBUF_NAMESPACE_ID::Metadata CreateRequest::GetMetadata() const {
 
 // ===================================================================
 
-class RemoveRequest::_Internal {
+class DropRequest::_Internal {
  public:
-  static const ::greptime::v1::flow::TaskId& task_id(const RemoveRequest* msg);
+  static const ::greptime::v1::flow::TaskId& flow_id(const DropRequest* msg);
 };
 
 const ::greptime::v1::flow::TaskId&
-RemoveRequest::_Internal::task_id(const RemoveRequest* msg) {
-  return *msg->_impl_.task_id_;
+DropRequest::_Internal::flow_id(const DropRequest* msg) {
+  return *msg->_impl_.flow_id_;
 }
-RemoveRequest::RemoveRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+DropRequest::DropRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
   : ::PROTOBUF_NAMESPACE_ID::Message(arena, is_message_owned) {
   SharedCtor(arena, is_message_owned);
-  // @@protoc_insertion_point(arena_constructor:greptime.v1.flow.RemoveRequest)
+  // @@protoc_insertion_point(arena_constructor:greptime.v1.flow.DropRequest)
 }
-RemoveRequest::RemoveRequest(const RemoveRequest& from)
+DropRequest::DropRequest(const DropRequest& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
-  RemoveRequest* const _this = this; (void)_this;
+  DropRequest* const _this = this; (void)_this;
   new (&_impl_) Impl_{
-      decltype(_impl_.task_id_){nullptr}
+      decltype(_impl_.flow_id_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  if (from._internal_has_task_id()) {
-    _this->_impl_.task_id_ = new ::greptime::v1::flow::TaskId(*from._impl_.task_id_);
+  if (from._internal_has_flow_id()) {
+    _this->_impl_.flow_id_ = new ::greptime::v1::flow::TaskId(*from._impl_.flow_id_);
   }
-  // @@protoc_insertion_point(copy_constructor:greptime.v1.flow.RemoveRequest)
+  // @@protoc_insertion_point(copy_constructor:greptime.v1.flow.DropRequest)
 }
 
-inline void RemoveRequest::SharedCtor(
+inline void DropRequest::SharedCtor(
     ::_pb::Arena* arena, bool is_message_owned) {
   (void)arena;
   (void)is_message_owned;
   new (&_impl_) Impl_{
-      decltype(_impl_.task_id_){nullptr}
+      decltype(_impl_.flow_id_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}
   };
 }
 
-RemoveRequest::~RemoveRequest() {
-  // @@protoc_insertion_point(destructor:greptime.v1.flow.RemoveRequest)
+DropRequest::~DropRequest() {
+  // @@protoc_insertion_point(destructor:greptime.v1.flow.DropRequest)
   if (auto *arena = _internal_metadata_.DeleteReturnArena<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>()) {
   (void)arena;
     return;
@@ -1978,38 +1977,38 @@ RemoveRequest::~RemoveRequest() {
   SharedDtor();
 }
 
-inline void RemoveRequest::SharedDtor() {
+inline void DropRequest::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
-  if (this != internal_default_instance()) delete _impl_.task_id_;
+  if (this != internal_default_instance()) delete _impl_.flow_id_;
 }
 
-void RemoveRequest::SetCachedSize(int size) const {
+void DropRequest::SetCachedSize(int size) const {
   _impl_._cached_size_.Set(size);
 }
 
-void RemoveRequest::Clear() {
-// @@protoc_insertion_point(message_clear_start:greptime.v1.flow.RemoveRequest)
+void DropRequest::Clear() {
+// @@protoc_insertion_point(message_clear_start:greptime.v1.flow.DropRequest)
   uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  if (GetArenaForAllocation() == nullptr && _impl_.task_id_ != nullptr) {
-    delete _impl_.task_id_;
+  if (GetArenaForAllocation() == nullptr && _impl_.flow_id_ != nullptr) {
+    delete _impl_.flow_id_;
   }
-  _impl_.task_id_ = nullptr;
+  _impl_.flow_id_ = nullptr;
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
-const char* RemoveRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
+const char* DropRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext* ctx) {
 #define CHK_(x) if (PROTOBUF_PREDICT_FALSE(!(x))) goto failure
   while (!ctx->Done(&ptr)) {
     uint32_t tag;
     ptr = ::_pbi::ReadTag(ptr, &tag);
     switch (tag >> 3) {
-      // .greptime.v1.flow.TaskId task_id = 1;
+      // .greptime.v1.flow.TaskId flow_id = 1;
       case 1:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
-          ptr = ctx->ParseMessage(_internal_mutable_task_id(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_flow_id(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -2037,85 +2036,85 @@ const char* RemoveRequest::_InternalParse(const char* ptr, ::_pbi::ParseContext*
 #undef CHK_
 }
 
-uint8_t* RemoveRequest::_InternalSerialize(
+uint8_t* DropRequest::_InternalSerialize(
     uint8_t* target, ::PROTOBUF_NAMESPACE_ID::io::EpsCopyOutputStream* stream) const {
-  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.flow.RemoveRequest)
+  // @@protoc_insertion_point(serialize_to_array_start:greptime.v1.flow.DropRequest)
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  // .greptime.v1.flow.TaskId task_id = 1;
-  if (this->_internal_has_task_id()) {
+  // .greptime.v1.flow.TaskId flow_id = 1;
+  if (this->_internal_has_flow_id()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(1, _Internal::task_id(this),
-        _Internal::task_id(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(1, _Internal::flow_id(this),
+        _Internal::flow_id(this).GetCachedSize(), target, stream);
   }
 
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
     target = ::_pbi::WireFormat::InternalSerializeUnknownFieldsToArray(
         _internal_metadata_.unknown_fields<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(::PROTOBUF_NAMESPACE_ID::UnknownFieldSet::default_instance), target, stream);
   }
-  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.flow.RemoveRequest)
+  // @@protoc_insertion_point(serialize_to_array_end:greptime.v1.flow.DropRequest)
   return target;
 }
 
-size_t RemoveRequest::ByteSizeLong() const {
-// @@protoc_insertion_point(message_byte_size_start:greptime.v1.flow.RemoveRequest)
+size_t DropRequest::ByteSizeLong() const {
+// @@protoc_insertion_point(message_byte_size_start:greptime.v1.flow.DropRequest)
   size_t total_size = 0;
 
   uint32_t cached_has_bits = 0;
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  // .greptime.v1.flow.TaskId task_id = 1;
-  if (this->_internal_has_task_id()) {
+  // .greptime.v1.flow.TaskId flow_id = 1;
+  if (this->_internal_has_flow_id()) {
     total_size += 1 +
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-        *_impl_.task_id_);
+        *_impl_.flow_id_);
   }
 
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
 }
 
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData RemoveRequest::_class_data_ = {
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData DropRequest::_class_data_ = {
     ::PROTOBUF_NAMESPACE_ID::Message::CopyWithSourceCheck,
-    RemoveRequest::MergeImpl
+    DropRequest::MergeImpl
 };
-const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*RemoveRequest::GetClassData() const { return &_class_data_; }
+const ::PROTOBUF_NAMESPACE_ID::Message::ClassData*DropRequest::GetClassData() const { return &_class_data_; }
 
 
-void RemoveRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
-  auto* const _this = static_cast<RemoveRequest*>(&to_msg);
-  auto& from = static_cast<const RemoveRequest&>(from_msg);
-  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.flow.RemoveRequest)
+void DropRequest::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg) {
+  auto* const _this = static_cast<DropRequest*>(&to_msg);
+  auto& from = static_cast<const DropRequest&>(from_msg);
+  // @@protoc_insertion_point(class_specific_merge_from_start:greptime.v1.flow.DropRequest)
   GOOGLE_DCHECK_NE(&from, _this);
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  if (from._internal_has_task_id()) {
-    _this->_internal_mutable_task_id()->::greptime::v1::flow::TaskId::MergeFrom(
-        from._internal_task_id());
+  if (from._internal_has_flow_id()) {
+    _this->_internal_mutable_flow_id()->::greptime::v1::flow::TaskId::MergeFrom(
+        from._internal_flow_id());
   }
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
 
-void RemoveRequest::CopyFrom(const RemoveRequest& from) {
-// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.flow.RemoveRequest)
+void DropRequest::CopyFrom(const DropRequest& from) {
+// @@protoc_insertion_point(class_specific_copy_from_start:greptime.v1.flow.DropRequest)
   if (&from == this) return;
   Clear();
   MergeFrom(from);
 }
 
-bool RemoveRequest::IsInitialized() const {
+bool DropRequest::IsInitialized() const {
   return true;
 }
 
-void RemoveRequest::InternalSwap(RemoveRequest* other) {
+void DropRequest::InternalSwap(DropRequest* other) {
   using std::swap;
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
-  swap(_impl_.task_id_, other->_impl_.task_id_);
+  swap(_impl_.flow_id_, other->_impl_.flow_id_);
 }
 
-::PROTOBUF_NAMESPACE_ID::Metadata RemoveRequest::GetMetadata() const {
+::PROTOBUF_NAMESPACE_ID::Metadata DropRequest::GetMetadata() const {
   return ::_pbi::AssignDescriptors(
       &descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_getter, &descriptor_table_greptime_2fv1_2fflow_2fserver_2eproto_once,
       file_level_metadata_greptime_2fv1_2fflow_2fserver_2eproto[7]);
@@ -2324,17 +2323,17 @@ template<> PROTOBUF_NOINLINE ::greptime::v1::flow::FlowResponse*
 Arena::CreateMaybeMessage< ::greptime::v1::flow::FlowResponse >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::flow::FlowResponse >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse*
-Arena::CreateMaybeMessage< ::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse >(arena);
+template<> PROTOBUF_NOINLINE ::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse*
+Arena::CreateMaybeMessage< ::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse >(arena);
 }
 template<> PROTOBUF_NOINLINE ::greptime::v1::flow::CreateRequest*
 Arena::CreateMaybeMessage< ::greptime::v1::flow::CreateRequest >(Arena* arena) {
   return Arena::CreateMessageInternal< ::greptime::v1::flow::CreateRequest >(arena);
 }
-template<> PROTOBUF_NOINLINE ::greptime::v1::flow::RemoveRequest*
-Arena::CreateMaybeMessage< ::greptime::v1::flow::RemoveRequest >(Arena* arena) {
-  return Arena::CreateMessageInternal< ::greptime::v1::flow::RemoveRequest >(arena);
+template<> PROTOBUF_NOINLINE ::greptime::v1::flow::DropRequest*
+Arena::CreateMaybeMessage< ::greptime::v1::flow::DropRequest >(Arena* arena) {
+  return Arena::CreateMessageInternal< ::greptime::v1::flow::DropRequest >(arena);
 }
 template<> PROTOBUF_NOINLINE ::greptime::v1::flow::TaskId*
 Arena::CreateMaybeMessage< ::greptime::v1::flow::TaskId >(Arena* arena) {
diff --git a/c++/greptime/v1/flow/server.pb.h b/c++/greptime/v1/flow/server.pb.h
index 62001036..3e0169cb 100644
--- a/c++/greptime/v1/flow/server.pb.h
+++ b/c++/greptime/v1/flow/server.pb.h
@@ -56,9 +56,12 @@ namespace flow {
 class CreateRequest;
 struct CreateRequestDefaultTypeInternal;
 extern CreateRequestDefaultTypeInternal _CreateRequest_default_instance_;
-class CreateRequest_TaskOptionsEntry_DoNotUse;
-struct CreateRequest_TaskOptionsEntry_DoNotUseDefaultTypeInternal;
-extern CreateRequest_TaskOptionsEntry_DoNotUseDefaultTypeInternal _CreateRequest_TaskOptionsEntry_DoNotUse_default_instance_;
+class CreateRequest_FlowOptionsEntry_DoNotUse;
+struct CreateRequest_FlowOptionsEntry_DoNotUseDefaultTypeInternal;
+extern CreateRequest_FlowOptionsEntry_DoNotUseDefaultTypeInternal _CreateRequest_FlowOptionsEntry_DoNotUse_default_instance_;
+class DropRequest;
+struct DropRequestDefaultTypeInternal;
+extern DropRequestDefaultTypeInternal _DropRequest_default_instance_;
 class FlowRequest;
 struct FlowRequestDefaultTypeInternal;
 extern FlowRequestDefaultTypeInternal _FlowRequest_default_instance_;
@@ -74,9 +77,6 @@ extern InsertRequestDefaultTypeInternal _InsertRequest_default_instance_;
 class InsertRequests;
 struct InsertRequestsDefaultTypeInternal;
 extern InsertRequestsDefaultTypeInternal _InsertRequests_default_instance_;
-class RemoveRequest;
-struct RemoveRequestDefaultTypeInternal;
-extern RemoveRequestDefaultTypeInternal _RemoveRequest_default_instance_;
 class TaskId;
 struct TaskIdDefaultTypeInternal;
 extern TaskIdDefaultTypeInternal _TaskId_default_instance_;
@@ -85,13 +85,13 @@ extern TaskIdDefaultTypeInternal _TaskId_default_instance_;
 }  // namespace greptime
 PROTOBUF_NAMESPACE_OPEN
 template<> ::greptime::v1::flow::CreateRequest* Arena::CreateMaybeMessage<::greptime::v1::flow::CreateRequest>(Arena*);
-template<> ::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::flow::CreateRequest_TaskOptionsEntry_DoNotUse>(Arena*);
+template<> ::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::flow::CreateRequest_FlowOptionsEntry_DoNotUse>(Arena*);
+template<> ::greptime::v1::flow::DropRequest* Arena::CreateMaybeMessage<::greptime::v1::flow::DropRequest>(Arena*);
 template<> ::greptime::v1::flow::FlowRequest* Arena::CreateMaybeMessage<::greptime::v1::flow::FlowRequest>(Arena*);
 template<> ::greptime::v1::flow::FlowResponse* Arena::CreateMaybeMessage<::greptime::v1::flow::FlowResponse>(Arena*);
 template<> ::greptime::v1::flow::FlowResponse_ExtensionEntry_DoNotUse* Arena::CreateMaybeMessage<::greptime::v1::flow::FlowResponse_ExtensionEntry_DoNotUse>(Arena*);
 template<> ::greptime::v1::flow::InsertRequest* Arena::CreateMaybeMessage<::greptime::v1::flow::InsertRequest>(Arena*);
 template<> ::greptime::v1::flow::InsertRequests* Arena::CreateMaybeMessage<::greptime::v1::flow::InsertRequests>(Arena*);
-template<> ::greptime::v1::flow::RemoveRequest* Arena::CreateMaybeMessage<::greptime::v1::flow::RemoveRequest>(Arena*);
 template<> ::greptime::v1::flow::TaskId* Arena::CreateMaybeMessage<::greptime::v1::flow::TaskId>(Arena*);
 PROTOBUF_NAMESPACE_CLOSE
 namespace greptime {
@@ -470,7 +470,7 @@ class FlowRequest final :
   }
   enum BodyCase {
     kCreate = 1,
-    kRemove = 2,
+    kDrop = 2,
     BODY_NOT_SET = 0,
   };
 
@@ -553,7 +553,7 @@ class FlowRequest final :
 
   enum : int {
     kCreateFieldNumber = 1,
-    kRemoveFieldNumber = 2,
+    kDropFieldNumber = 2,
   };
   // .greptime.v1.flow.CreateRequest create = 1;
   bool has_create() const;
@@ -573,23 +573,23 @@ class FlowRequest final :
       ::greptime::v1::flow::CreateRequest* create);
   ::greptime::v1::flow::CreateRequest* unsafe_arena_release_create();
 
-  // .greptime.v1.flow.RemoveRequest remove = 2;
-  bool has_remove() const;
+  // .greptime.v1.flow.DropRequest drop = 2;
+  bool has_drop() const;
   private:
-  bool _internal_has_remove() const;
+  bool _internal_has_drop() const;
   public:
-  void clear_remove();
-  const ::greptime::v1::flow::RemoveRequest& remove() const;
-  PROTOBUF_NODISCARD ::greptime::v1::flow::RemoveRequest* release_remove();
-  ::greptime::v1::flow::RemoveRequest* mutable_remove();
-  void set_allocated_remove(::greptime::v1::flow::RemoveRequest* remove);
+  void clear_drop();
+  const ::greptime::v1::flow::DropRequest& drop() const;
+  PROTOBUF_NODISCARD ::greptime::v1::flow::DropRequest* release_drop();
+  ::greptime::v1::flow::DropRequest* mutable_drop();
+  void set_allocated_drop(::greptime::v1::flow::DropRequest* drop);
   private:
-  const ::greptime::v1::flow::RemoveRequest& _internal_remove() const;
-  ::greptime::v1::flow::RemoveRequest* _internal_mutable_remove();
+  const ::greptime::v1::flow::DropRequest& _internal_drop() const;
+  ::greptime::v1::flow::DropRequest* _internal_mutable_drop();
   public:
-  void unsafe_arena_set_allocated_remove(
-      ::greptime::v1::flow::RemoveRequest* remove);
-  ::greptime::v1::flow::RemoveRequest* unsafe_arena_release_remove();
+  void unsafe_arena_set_allocated_drop(
+      ::greptime::v1::flow::DropRequest* drop);
+  ::greptime::v1::flow::DropRequest* unsafe_arena_release_drop();
 
   void clear_body();
   BodyCase body_case() const;
@@ -597,7 +597,7 @@ class FlowRequest final :
  private:
   class _Internal;
   void set_has_create();
-  void set_has_remove();
+  void set_has_drop();
 
   inline bool has_body() const;
   inline void clear_has_body();
@@ -610,7 +610,7 @@ class FlowRequest final :
       constexpr BodyUnion() : _constinit_{} {}
         ::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized _constinit_;
       ::greptime::v1::flow::CreateRequest* create_;
-      ::greptime::v1::flow::RemoveRequest* remove_;
+      ::greptime::v1::flow::DropRequest* drop_;
     } body_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
     uint32_t _oneof_case_[1];
@@ -861,26 +861,26 @@ class FlowResponse final :
 };
 // -------------------------------------------------------------------
 
-class CreateRequest_TaskOptionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateRequest_TaskOptionsEntry_DoNotUse, 
+class CreateRequest_FlowOptionsEntry_DoNotUse : public ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateRequest_FlowOptionsEntry_DoNotUse, 
     std::string, std::string,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> {
 public:
-  typedef ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateRequest_TaskOptionsEntry_DoNotUse, 
+  typedef ::PROTOBUF_NAMESPACE_ID::internal::MapEntry<CreateRequest_FlowOptionsEntry_DoNotUse, 
     std::string, std::string,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
     ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> SuperType;
-  CreateRequest_TaskOptionsEntry_DoNotUse();
-  explicit PROTOBUF_CONSTEXPR CreateRequest_TaskOptionsEntry_DoNotUse(
+  CreateRequest_FlowOptionsEntry_DoNotUse();
+  explicit PROTOBUF_CONSTEXPR CreateRequest_FlowOptionsEntry_DoNotUse(
       ::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
-  explicit CreateRequest_TaskOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena);
-  void MergeFrom(const CreateRequest_TaskOptionsEntry_DoNotUse& other);
-  static const CreateRequest_TaskOptionsEntry_DoNotUse* internal_default_instance() { return reinterpret_cast<const CreateRequest_TaskOptionsEntry_DoNotUse*>(&_CreateRequest_TaskOptionsEntry_DoNotUse_default_instance_); }
+  explicit CreateRequest_FlowOptionsEntry_DoNotUse(::PROTOBUF_NAMESPACE_ID::Arena* arena);
+  void MergeFrom(const CreateRequest_FlowOptionsEntry_DoNotUse& other);
+  static const CreateRequest_FlowOptionsEntry_DoNotUse* internal_default_instance() { return reinterpret_cast<const CreateRequest_FlowOptionsEntry_DoNotUse*>(&_CreateRequest_FlowOptionsEntry_DoNotUse_default_instance_); }
   static bool ValidateKey(std::string* s) {
-    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.flow.CreateRequest.TaskOptionsEntry.key");
+    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.flow.CreateRequest.FlowOptionsEntry.key");
  }
   static bool ValidateValue(std::string* s) {
-    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.flow.CreateRequest.TaskOptionsEntry.value");
+    return ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::VerifyUtf8String(s->data(), static_cast<int>(s->size()), ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::PARSE, "greptime.v1.flow.CreateRequest.FlowOptionsEntry.value");
  }
   using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
   ::PROTOBUF_NAMESPACE_ID::Metadata GetMetadata() const final;
@@ -1014,11 +1014,11 @@ class CreateRequest final :
 
   enum : int {
     kSourceTableIdsFieldNumber = 2,
-    kTaskOptionsFieldNumber = 8,
+    kFlowOptionsFieldNumber = 8,
     kExpireWhenFieldNumber = 5,
     kCommentFieldNumber = 6,
     kSqlFieldNumber = 7,
-    kTaskIdFieldNumber = 1,
+    kFlowIdFieldNumber = 1,
     kSinkTableNameFieldNumber = 3,
     kCreateIfNotExistsFieldNumber = 4,
   };
@@ -1040,22 +1040,22 @@ class CreateRequest final :
   const ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::TableId >&
       source_table_ids() const;
 
-  // map<string, string> task_options = 8;
-  int task_options_size() const;
+  // map<string, string> flow_options = 8;
+  int flow_options_size() const;
   private:
-  int _internal_task_options_size() const;
+  int _internal_flow_options_size() const;
   public:
-  void clear_task_options();
+  void clear_flow_options();
   private:
   const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-      _internal_task_options() const;
+      _internal_flow_options() const;
   ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-      _internal_mutable_task_options();
+      _internal_mutable_flow_options();
   public:
   const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-      task_options() const;
+      flow_options() const;
   ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-      mutable_task_options();
+      mutable_flow_options();
 
   // string expire_when = 5;
   void clear_expire_when();
@@ -1099,23 +1099,23 @@ class CreateRequest final :
   std::string* _internal_mutable_sql();
   public:
 
-  // .greptime.v1.flow.TaskId task_id = 1;
-  bool has_task_id() const;
+  // .greptime.v1.flow.TaskId flow_id = 1;
+  bool has_flow_id() const;
   private:
-  bool _internal_has_task_id() const;
+  bool _internal_has_flow_id() const;
   public:
-  void clear_task_id();
-  const ::greptime::v1::flow::TaskId& task_id() const;
-  PROTOBUF_NODISCARD ::greptime::v1::flow::TaskId* release_task_id();
-  ::greptime::v1::flow::TaskId* mutable_task_id();
-  void set_allocated_task_id(::greptime::v1::flow::TaskId* task_id);
+  void clear_flow_id();
+  const ::greptime::v1::flow::TaskId& flow_id() const;
+  PROTOBUF_NODISCARD ::greptime::v1::flow::TaskId* release_flow_id();
+  ::greptime::v1::flow::TaskId* mutable_flow_id();
+  void set_allocated_flow_id(::greptime::v1::flow::TaskId* flow_id);
   private:
-  const ::greptime::v1::flow::TaskId& _internal_task_id() const;
-  ::greptime::v1::flow::TaskId* _internal_mutable_task_id();
+  const ::greptime::v1::flow::TaskId& _internal_flow_id() const;
+  ::greptime::v1::flow::TaskId* _internal_mutable_flow_id();
   public:
-  void unsafe_arena_set_allocated_task_id(
-      ::greptime::v1::flow::TaskId* task_id);
-  ::greptime::v1::flow::TaskId* unsafe_arena_release_task_id();
+  void unsafe_arena_set_allocated_flow_id(
+      ::greptime::v1::flow::TaskId* flow_id);
+  ::greptime::v1::flow::TaskId* unsafe_arena_release_flow_id();
 
   // .greptime.v1.TableName sink_table_name = 3;
   bool has_sink_table_name() const;
@@ -1154,14 +1154,14 @@ class CreateRequest final :
   struct Impl_ {
     ::PROTOBUF_NAMESPACE_ID::RepeatedPtrField< ::greptime::v1::TableId > source_table_ids_;
     ::PROTOBUF_NAMESPACE_ID::internal::MapField<
-        CreateRequest_TaskOptionsEntry_DoNotUse,
+        CreateRequest_FlowOptionsEntry_DoNotUse,
         std::string, std::string,
         ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING,
-        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> task_options_;
+        ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::TYPE_STRING> flow_options_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr expire_when_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr comment_;
     ::PROTOBUF_NAMESPACE_ID::internal::ArenaStringPtr sql_;
-    ::greptime::v1::flow::TaskId* task_id_;
+    ::greptime::v1::flow::TaskId* flow_id_;
     ::greptime::v1::TableName* sink_table_name_;
     bool create_if_not_exists_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
@@ -1171,24 +1171,24 @@ class CreateRequest final :
 };
 // -------------------------------------------------------------------
 
-class RemoveRequest final :
-    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.flow.RemoveRequest) */ {
+class DropRequest final :
+    public ::PROTOBUF_NAMESPACE_ID::Message /* @@protoc_insertion_point(class_definition:greptime.v1.flow.DropRequest) */ {
  public:
-  inline RemoveRequest() : RemoveRequest(nullptr) {}
-  ~RemoveRequest() override;
-  explicit PROTOBUF_CONSTEXPR RemoveRequest(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
+  inline DropRequest() : DropRequest(nullptr) {}
+  ~DropRequest() override;
+  explicit PROTOBUF_CONSTEXPR DropRequest(::PROTOBUF_NAMESPACE_ID::internal::ConstantInitialized);
 
-  RemoveRequest(const RemoveRequest& from);
-  RemoveRequest(RemoveRequest&& from) noexcept
-    : RemoveRequest() {
+  DropRequest(const DropRequest& from);
+  DropRequest(DropRequest&& from) noexcept
+    : DropRequest() {
     *this = ::std::move(from);
   }
 
-  inline RemoveRequest& operator=(const RemoveRequest& from) {
+  inline DropRequest& operator=(const DropRequest& from) {
     CopyFrom(from);
     return *this;
   }
-  inline RemoveRequest& operator=(RemoveRequest&& from) noexcept {
+  inline DropRequest& operator=(DropRequest&& from) noexcept {
     if (this == &from) return *this;
     if (GetOwningArena() == from.GetOwningArena()
   #ifdef PROTOBUF_FORCE_COPY_IN_MOVE
@@ -1211,20 +1211,20 @@ class RemoveRequest final :
   static const ::PROTOBUF_NAMESPACE_ID::Reflection* GetReflection() {
     return default_instance().GetMetadata().reflection;
   }
-  static const RemoveRequest& default_instance() {
+  static const DropRequest& default_instance() {
     return *internal_default_instance();
   }
-  static inline const RemoveRequest* internal_default_instance() {
-    return reinterpret_cast<const RemoveRequest*>(
-               &_RemoveRequest_default_instance_);
+  static inline const DropRequest* internal_default_instance() {
+    return reinterpret_cast<const DropRequest*>(
+               &_DropRequest_default_instance_);
   }
   static constexpr int kIndexInFileMessages =
     7;
 
-  friend void swap(RemoveRequest& a, RemoveRequest& b) {
+  friend void swap(DropRequest& a, DropRequest& b) {
     a.Swap(&b);
   }
-  inline void Swap(RemoveRequest* other) {
+  inline void Swap(DropRequest* other) {
     if (other == this) return;
   #ifdef PROTOBUF_FORCE_COPY_IN_SWAP
     if (GetOwningArena() != nullptr &&
@@ -1237,7 +1237,7 @@ class RemoveRequest final :
       ::PROTOBUF_NAMESPACE_ID::internal::GenericSwap(this, other);
     }
   }
-  void UnsafeArenaSwap(RemoveRequest* other) {
+  void UnsafeArenaSwap(DropRequest* other) {
     if (other == this) return;
     GOOGLE_DCHECK(GetOwningArena() == other->GetOwningArena());
     InternalSwap(other);
@@ -1245,14 +1245,14 @@ class RemoveRequest final :
 
   // implements Message ----------------------------------------------
 
-  RemoveRequest* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
-    return CreateMaybeMessage<RemoveRequest>(arena);
+  DropRequest* New(::PROTOBUF_NAMESPACE_ID::Arena* arena = nullptr) const final {
+    return CreateMaybeMessage<DropRequest>(arena);
   }
   using ::PROTOBUF_NAMESPACE_ID::Message::CopyFrom;
-  void CopyFrom(const RemoveRequest& from);
+  void CopyFrom(const DropRequest& from);
   using ::PROTOBUF_NAMESPACE_ID::Message::MergeFrom;
-  void MergeFrom( const RemoveRequest& from) {
-    RemoveRequest::MergeImpl(*this, from);
+  void MergeFrom( const DropRequest& from) {
+    DropRequest::MergeImpl(*this, from);
   }
   private:
   static void MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::PROTOBUF_NAMESPACE_ID::Message& from_msg);
@@ -1270,15 +1270,15 @@ class RemoveRequest final :
   void SharedCtor(::PROTOBUF_NAMESPACE_ID::Arena* arena, bool is_message_owned);
   void SharedDtor();
   void SetCachedSize(int size) const final;
-  void InternalSwap(RemoveRequest* other);
+  void InternalSwap(DropRequest* other);
 
   private:
   friend class ::PROTOBUF_NAMESPACE_ID::internal::AnyMetadata;
   static ::PROTOBUF_NAMESPACE_ID::StringPiece FullMessageName() {
-    return "greptime.v1.flow.RemoveRequest";
+    return "greptime.v1.flow.DropRequest";
   }
   protected:
-  explicit RemoveRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
+  explicit DropRequest(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                        bool is_message_owned = false);
   public:
 
@@ -1292,27 +1292,27 @@ class RemoveRequest final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kTaskIdFieldNumber = 1,
+    kFlowIdFieldNumber = 1,
   };
-  // .greptime.v1.flow.TaskId task_id = 1;
-  bool has_task_id() const;
+  // .greptime.v1.flow.TaskId flow_id = 1;
+  bool has_flow_id() const;
   private:
-  bool _internal_has_task_id() const;
+  bool _internal_has_flow_id() const;
   public:
-  void clear_task_id();
-  const ::greptime::v1::flow::TaskId& task_id() const;
-  PROTOBUF_NODISCARD ::greptime::v1::flow::TaskId* release_task_id();
-  ::greptime::v1::flow::TaskId* mutable_task_id();
-  void set_allocated_task_id(::greptime::v1::flow::TaskId* task_id);
+  void clear_flow_id();
+  const ::greptime::v1::flow::TaskId& flow_id() const;
+  PROTOBUF_NODISCARD ::greptime::v1::flow::TaskId* release_flow_id();
+  ::greptime::v1::flow::TaskId* mutable_flow_id();
+  void set_allocated_flow_id(::greptime::v1::flow::TaskId* flow_id);
   private:
-  const ::greptime::v1::flow::TaskId& _internal_task_id() const;
-  ::greptime::v1::flow::TaskId* _internal_mutable_task_id();
+  const ::greptime::v1::flow::TaskId& _internal_flow_id() const;
+  ::greptime::v1::flow::TaskId* _internal_mutable_flow_id();
   public:
-  void unsafe_arena_set_allocated_task_id(
-      ::greptime::v1::flow::TaskId* task_id);
-  ::greptime::v1::flow::TaskId* unsafe_arena_release_task_id();
+  void unsafe_arena_set_allocated_flow_id(
+      ::greptime::v1::flow::TaskId* flow_id);
+  ::greptime::v1::flow::TaskId* unsafe_arena_release_flow_id();
 
-  // @@protoc_insertion_point(class_scope:greptime.v1.flow.RemoveRequest)
+  // @@protoc_insertion_point(class_scope:greptime.v1.flow.DropRequest)
  private:
   class _Internal;
 
@@ -1320,7 +1320,7 @@ class RemoveRequest final :
   typedef void InternalArenaConstructable_;
   typedef void DestructorSkippable_;
   struct Impl_ {
-    ::greptime::v1::flow::TaskId* task_id_;
+    ::greptime::v1::flow::TaskId* flow_id_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
   };
   union { Impl_ _impl_; };
@@ -1712,77 +1712,77 @@ inline ::greptime::v1::flow::CreateRequest* FlowRequest::mutable_create() {
   return _msg;
 }
 
-// .greptime.v1.flow.RemoveRequest remove = 2;
-inline bool FlowRequest::_internal_has_remove() const {
-  return body_case() == kRemove;
+// .greptime.v1.flow.DropRequest drop = 2;
+inline bool FlowRequest::_internal_has_drop() const {
+  return body_case() == kDrop;
 }
-inline bool FlowRequest::has_remove() const {
-  return _internal_has_remove();
+inline bool FlowRequest::has_drop() const {
+  return _internal_has_drop();
 }
-inline void FlowRequest::set_has_remove() {
-  _impl_._oneof_case_[0] = kRemove;
+inline void FlowRequest::set_has_drop() {
+  _impl_._oneof_case_[0] = kDrop;
 }
-inline void FlowRequest::clear_remove() {
-  if (_internal_has_remove()) {
+inline void FlowRequest::clear_drop() {
+  if (_internal_has_drop()) {
     if (GetArenaForAllocation() == nullptr) {
-      delete _impl_.body_.remove_;
+      delete _impl_.body_.drop_;
     }
     clear_has_body();
   }
 }
-inline ::greptime::v1::flow::RemoveRequest* FlowRequest::release_remove() {
-  // @@protoc_insertion_point(field_release:greptime.v1.flow.FlowRequest.remove)
-  if (_internal_has_remove()) {
+inline ::greptime::v1::flow::DropRequest* FlowRequest::release_drop() {
+  // @@protoc_insertion_point(field_release:greptime.v1.flow.FlowRequest.drop)
+  if (_internal_has_drop()) {
     clear_has_body();
-    ::greptime::v1::flow::RemoveRequest* temp = _impl_.body_.remove_;
+    ::greptime::v1::flow::DropRequest* temp = _impl_.body_.drop_;
     if (GetArenaForAllocation() != nullptr) {
       temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
     }
-    _impl_.body_.remove_ = nullptr;
+    _impl_.body_.drop_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline const ::greptime::v1::flow::RemoveRequest& FlowRequest::_internal_remove() const {
-  return _internal_has_remove()
-      ? *_impl_.body_.remove_
-      : reinterpret_cast< ::greptime::v1::flow::RemoveRequest&>(::greptime::v1::flow::_RemoveRequest_default_instance_);
+inline const ::greptime::v1::flow::DropRequest& FlowRequest::_internal_drop() const {
+  return _internal_has_drop()
+      ? *_impl_.body_.drop_
+      : reinterpret_cast< ::greptime::v1::flow::DropRequest&>(::greptime::v1::flow::_DropRequest_default_instance_);
 }
-inline const ::greptime::v1::flow::RemoveRequest& FlowRequest::remove() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.flow.FlowRequest.remove)
-  return _internal_remove();
+inline const ::greptime::v1::flow::DropRequest& FlowRequest::drop() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.flow.FlowRequest.drop)
+  return _internal_drop();
 }
-inline ::greptime::v1::flow::RemoveRequest* FlowRequest::unsafe_arena_release_remove() {
-  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.flow.FlowRequest.remove)
-  if (_internal_has_remove()) {
+inline ::greptime::v1::flow::DropRequest* FlowRequest::unsafe_arena_release_drop() {
+  // @@protoc_insertion_point(field_unsafe_arena_release:greptime.v1.flow.FlowRequest.drop)
+  if (_internal_has_drop()) {
     clear_has_body();
-    ::greptime::v1::flow::RemoveRequest* temp = _impl_.body_.remove_;
-    _impl_.body_.remove_ = nullptr;
+    ::greptime::v1::flow::DropRequest* temp = _impl_.body_.drop_;
+    _impl_.body_.drop_ = nullptr;
     return temp;
   } else {
     return nullptr;
   }
 }
-inline void FlowRequest::unsafe_arena_set_allocated_remove(::greptime::v1::flow::RemoveRequest* remove) {
+inline void FlowRequest::unsafe_arena_set_allocated_drop(::greptime::v1::flow::DropRequest* drop) {
   clear_body();
-  if (remove) {
-    set_has_remove();
-    _impl_.body_.remove_ = remove;
+  if (drop) {
+    set_has_drop();
+    _impl_.body_.drop_ = drop;
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.flow.FlowRequest.remove)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.flow.FlowRequest.drop)
 }
-inline ::greptime::v1::flow::RemoveRequest* FlowRequest::_internal_mutable_remove() {
-  if (!_internal_has_remove()) {
+inline ::greptime::v1::flow::DropRequest* FlowRequest::_internal_mutable_drop() {
+  if (!_internal_has_drop()) {
     clear_body();
-    set_has_remove();
-    _impl_.body_.remove_ = CreateMaybeMessage< ::greptime::v1::flow::RemoveRequest >(GetArenaForAllocation());
+    set_has_drop();
+    _impl_.body_.drop_ = CreateMaybeMessage< ::greptime::v1::flow::DropRequest >(GetArenaForAllocation());
   }
-  return _impl_.body_.remove_;
+  return _impl_.body_.drop_;
 }
-inline ::greptime::v1::flow::RemoveRequest* FlowRequest::mutable_remove() {
-  ::greptime::v1::flow::RemoveRequest* _msg = _internal_mutable_remove();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.flow.FlowRequest.remove)
+inline ::greptime::v1::flow::DropRequest* FlowRequest::mutable_drop() {
+  ::greptime::v1::flow::DropRequest* _msg = _internal_mutable_drop();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.flow.FlowRequest.drop)
   return _msg;
 }
 
@@ -1981,45 +1981,45 @@ FlowResponse::affected_tasks() const {
 
 // CreateRequest
 
-// .greptime.v1.flow.TaskId task_id = 1;
-inline bool CreateRequest::_internal_has_task_id() const {
-  return this != internal_default_instance() && _impl_.task_id_ != nullptr;
+// .greptime.v1.flow.TaskId flow_id = 1;
+inline bool CreateRequest::_internal_has_flow_id() const {
+  return this != internal_default_instance() && _impl_.flow_id_ != nullptr;
 }
-inline bool CreateRequest::has_task_id() const {
-  return _internal_has_task_id();
+inline bool CreateRequest::has_flow_id() const {
+  return _internal_has_flow_id();
 }
-inline void CreateRequest::clear_task_id() {
-  if (GetArenaForAllocation() == nullptr && _impl_.task_id_ != nullptr) {
-    delete _impl_.task_id_;
+inline void CreateRequest::clear_flow_id() {
+  if (GetArenaForAllocation() == nullptr && _impl_.flow_id_ != nullptr) {
+    delete _impl_.flow_id_;
   }
-  _impl_.task_id_ = nullptr;
+  _impl_.flow_id_ = nullptr;
 }
-inline const ::greptime::v1::flow::TaskId& CreateRequest::_internal_task_id() const {
-  const ::greptime::v1::flow::TaskId* p = _impl_.task_id_;
+inline const ::greptime::v1::flow::TaskId& CreateRequest::_internal_flow_id() const {
+  const ::greptime::v1::flow::TaskId* p = _impl_.flow_id_;
   return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::flow::TaskId&>(
       ::greptime::v1::flow::_TaskId_default_instance_);
 }
-inline const ::greptime::v1::flow::TaskId& CreateRequest::task_id() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.flow.CreateRequest.task_id)
-  return _internal_task_id();
+inline const ::greptime::v1::flow::TaskId& CreateRequest::flow_id() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.flow.CreateRequest.flow_id)
+  return _internal_flow_id();
 }
-inline void CreateRequest::unsafe_arena_set_allocated_task_id(
-    ::greptime::v1::flow::TaskId* task_id) {
+inline void CreateRequest::unsafe_arena_set_allocated_flow_id(
+    ::greptime::v1::flow::TaskId* flow_id) {
   if (GetArenaForAllocation() == nullptr) {
-    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.task_id_);
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.flow_id_);
   }
-  _impl_.task_id_ = task_id;
-  if (task_id) {
+  _impl_.flow_id_ = flow_id;
+  if (flow_id) {
     
   } else {
     
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.flow.CreateRequest.task_id)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.flow.CreateRequest.flow_id)
 }
-inline ::greptime::v1::flow::TaskId* CreateRequest::release_task_id() {
+inline ::greptime::v1::flow::TaskId* CreateRequest::release_flow_id() {
   
-  ::greptime::v1::flow::TaskId* temp = _impl_.task_id_;
-  _impl_.task_id_ = nullptr;
+  ::greptime::v1::flow::TaskId* temp = _impl_.flow_id_;
+  _impl_.flow_id_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
   temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
@@ -2031,44 +2031,44 @@ inline ::greptime::v1::flow::TaskId* CreateRequest::release_task_id() {
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return temp;
 }
-inline ::greptime::v1::flow::TaskId* CreateRequest::unsafe_arena_release_task_id() {
-  // @@protoc_insertion_point(field_release:greptime.v1.flow.CreateRequest.task_id)
+inline ::greptime::v1::flow::TaskId* CreateRequest::unsafe_arena_release_flow_id() {
+  // @@protoc_insertion_point(field_release:greptime.v1.flow.CreateRequest.flow_id)
   
-  ::greptime::v1::flow::TaskId* temp = _impl_.task_id_;
-  _impl_.task_id_ = nullptr;
+  ::greptime::v1::flow::TaskId* temp = _impl_.flow_id_;
+  _impl_.flow_id_ = nullptr;
   return temp;
 }
-inline ::greptime::v1::flow::TaskId* CreateRequest::_internal_mutable_task_id() {
+inline ::greptime::v1::flow::TaskId* CreateRequest::_internal_mutable_flow_id() {
   
-  if (_impl_.task_id_ == nullptr) {
+  if (_impl_.flow_id_ == nullptr) {
     auto* p = CreateMaybeMessage<::greptime::v1::flow::TaskId>(GetArenaForAllocation());
-    _impl_.task_id_ = p;
+    _impl_.flow_id_ = p;
   }
-  return _impl_.task_id_;
+  return _impl_.flow_id_;
 }
-inline ::greptime::v1::flow::TaskId* CreateRequest::mutable_task_id() {
-  ::greptime::v1::flow::TaskId* _msg = _internal_mutable_task_id();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.flow.CreateRequest.task_id)
+inline ::greptime::v1::flow::TaskId* CreateRequest::mutable_flow_id() {
+  ::greptime::v1::flow::TaskId* _msg = _internal_mutable_flow_id();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.flow.CreateRequest.flow_id)
   return _msg;
 }
-inline void CreateRequest::set_allocated_task_id(::greptime::v1::flow::TaskId* task_id) {
+inline void CreateRequest::set_allocated_flow_id(::greptime::v1::flow::TaskId* flow_id) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   if (message_arena == nullptr) {
-    delete _impl_.task_id_;
+    delete _impl_.flow_id_;
   }
-  if (task_id) {
+  if (flow_id) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(task_id);
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(flow_id);
     if (message_arena != submessage_arena) {
-      task_id = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, task_id, submessage_arena);
+      flow_id = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, flow_id, submessage_arena);
     }
     
   } else {
     
   }
-  _impl_.task_id_ = task_id;
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.CreateRequest.task_id)
+  _impl_.flow_id_ = flow_id;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.CreateRequest.flow_id)
 }
 
 // repeated .greptime.v1.TableId source_table_ids = 2;
@@ -2363,78 +2363,78 @@ inline void CreateRequest::set_allocated_sql(std::string* sql) {
   // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.CreateRequest.sql)
 }
 
-// map<string, string> task_options = 8;
-inline int CreateRequest::_internal_task_options_size() const {
-  return _impl_.task_options_.size();
+// map<string, string> flow_options = 8;
+inline int CreateRequest::_internal_flow_options_size() const {
+  return _impl_.flow_options_.size();
 }
-inline int CreateRequest::task_options_size() const {
-  return _internal_task_options_size();
+inline int CreateRequest::flow_options_size() const {
+  return _internal_flow_options_size();
 }
-inline void CreateRequest::clear_task_options() {
-  _impl_.task_options_.Clear();
+inline void CreateRequest::clear_flow_options() {
+  _impl_.flow_options_.Clear();
 }
 inline const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-CreateRequest::_internal_task_options() const {
-  return _impl_.task_options_.GetMap();
+CreateRequest::_internal_flow_options() const {
+  return _impl_.flow_options_.GetMap();
 }
 inline const ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >&
-CreateRequest::task_options() const {
-  // @@protoc_insertion_point(field_map:greptime.v1.flow.CreateRequest.task_options)
-  return _internal_task_options();
+CreateRequest::flow_options() const {
+  // @@protoc_insertion_point(field_map:greptime.v1.flow.CreateRequest.flow_options)
+  return _internal_flow_options();
 }
 inline ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-CreateRequest::_internal_mutable_task_options() {
-  return _impl_.task_options_.MutableMap();
+CreateRequest::_internal_mutable_flow_options() {
+  return _impl_.flow_options_.MutableMap();
 }
 inline ::PROTOBUF_NAMESPACE_ID::Map< std::string, std::string >*
-CreateRequest::mutable_task_options() {
-  // @@protoc_insertion_point(field_mutable_map:greptime.v1.flow.CreateRequest.task_options)
-  return _internal_mutable_task_options();
+CreateRequest::mutable_flow_options() {
+  // @@protoc_insertion_point(field_mutable_map:greptime.v1.flow.CreateRequest.flow_options)
+  return _internal_mutable_flow_options();
 }
 
 // -------------------------------------------------------------------
 
-// RemoveRequest
+// DropRequest
 
-// .greptime.v1.flow.TaskId task_id = 1;
-inline bool RemoveRequest::_internal_has_task_id() const {
-  return this != internal_default_instance() && _impl_.task_id_ != nullptr;
+// .greptime.v1.flow.TaskId flow_id = 1;
+inline bool DropRequest::_internal_has_flow_id() const {
+  return this != internal_default_instance() && _impl_.flow_id_ != nullptr;
 }
-inline bool RemoveRequest::has_task_id() const {
-  return _internal_has_task_id();
+inline bool DropRequest::has_flow_id() const {
+  return _internal_has_flow_id();
 }
-inline void RemoveRequest::clear_task_id() {
-  if (GetArenaForAllocation() == nullptr && _impl_.task_id_ != nullptr) {
-    delete _impl_.task_id_;
+inline void DropRequest::clear_flow_id() {
+  if (GetArenaForAllocation() == nullptr && _impl_.flow_id_ != nullptr) {
+    delete _impl_.flow_id_;
   }
-  _impl_.task_id_ = nullptr;
+  _impl_.flow_id_ = nullptr;
 }
-inline const ::greptime::v1::flow::TaskId& RemoveRequest::_internal_task_id() const {
-  const ::greptime::v1::flow::TaskId* p = _impl_.task_id_;
+inline const ::greptime::v1::flow::TaskId& DropRequest::_internal_flow_id() const {
+  const ::greptime::v1::flow::TaskId* p = _impl_.flow_id_;
   return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::flow::TaskId&>(
       ::greptime::v1::flow::_TaskId_default_instance_);
 }
-inline const ::greptime::v1::flow::TaskId& RemoveRequest::task_id() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.flow.RemoveRequest.task_id)
-  return _internal_task_id();
+inline const ::greptime::v1::flow::TaskId& DropRequest::flow_id() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.flow.DropRequest.flow_id)
+  return _internal_flow_id();
 }
-inline void RemoveRequest::unsafe_arena_set_allocated_task_id(
-    ::greptime::v1::flow::TaskId* task_id) {
+inline void DropRequest::unsafe_arena_set_allocated_flow_id(
+    ::greptime::v1::flow::TaskId* flow_id) {
   if (GetArenaForAllocation() == nullptr) {
-    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.task_id_);
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.flow_id_);
   }
-  _impl_.task_id_ = task_id;
-  if (task_id) {
+  _impl_.flow_id_ = flow_id;
+  if (flow_id) {
     
   } else {
     
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.flow.RemoveRequest.task_id)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.flow.DropRequest.flow_id)
 }
-inline ::greptime::v1::flow::TaskId* RemoveRequest::release_task_id() {
+inline ::greptime::v1::flow::TaskId* DropRequest::release_flow_id() {
   
-  ::greptime::v1::flow::TaskId* temp = _impl_.task_id_;
-  _impl_.task_id_ = nullptr;
+  ::greptime::v1::flow::TaskId* temp = _impl_.flow_id_;
+  _impl_.flow_id_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
   temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
@@ -2446,44 +2446,44 @@ inline ::greptime::v1::flow::TaskId* RemoveRequest::release_task_id() {
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return temp;
 }
-inline ::greptime::v1::flow::TaskId* RemoveRequest::unsafe_arena_release_task_id() {
-  // @@protoc_insertion_point(field_release:greptime.v1.flow.RemoveRequest.task_id)
+inline ::greptime::v1::flow::TaskId* DropRequest::unsafe_arena_release_flow_id() {
+  // @@protoc_insertion_point(field_release:greptime.v1.flow.DropRequest.flow_id)
   
-  ::greptime::v1::flow::TaskId* temp = _impl_.task_id_;
-  _impl_.task_id_ = nullptr;
+  ::greptime::v1::flow::TaskId* temp = _impl_.flow_id_;
+  _impl_.flow_id_ = nullptr;
   return temp;
 }
-inline ::greptime::v1::flow::TaskId* RemoveRequest::_internal_mutable_task_id() {
+inline ::greptime::v1::flow::TaskId* DropRequest::_internal_mutable_flow_id() {
   
-  if (_impl_.task_id_ == nullptr) {
+  if (_impl_.flow_id_ == nullptr) {
     auto* p = CreateMaybeMessage<::greptime::v1::flow::TaskId>(GetArenaForAllocation());
-    _impl_.task_id_ = p;
+    _impl_.flow_id_ = p;
   }
-  return _impl_.task_id_;
+  return _impl_.flow_id_;
 }
-inline ::greptime::v1::flow::TaskId* RemoveRequest::mutable_task_id() {
-  ::greptime::v1::flow::TaskId* _msg = _internal_mutable_task_id();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.flow.RemoveRequest.task_id)
+inline ::greptime::v1::flow::TaskId* DropRequest::mutable_flow_id() {
+  ::greptime::v1::flow::TaskId* _msg = _internal_mutable_flow_id();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.flow.DropRequest.flow_id)
   return _msg;
 }
-inline void RemoveRequest::set_allocated_task_id(::greptime::v1::flow::TaskId* task_id) {
+inline void DropRequest::set_allocated_flow_id(::greptime::v1::flow::TaskId* flow_id) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   if (message_arena == nullptr) {
-    delete _impl_.task_id_;
+    delete _impl_.flow_id_;
   }
-  if (task_id) {
+  if (flow_id) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
-        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(task_id);
+        ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(flow_id);
     if (message_arena != submessage_arena) {
-      task_id = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, task_id, submessage_arena);
+      flow_id = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, flow_id, submessage_arena);
     }
     
   } else {
     
   }
-  _impl_.task_id_ = task_id;
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.RemoveRequest.task_id)
+  _impl_.flow_id_ = flow_id;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.flow.DropRequest.flow_id)
 }
 
 // -------------------------------------------------------------------
diff --git a/c++/greptime/v1/meta/ddl.pb.cc b/c++/greptime/v1/meta/ddl.pb.cc
index 074467d8..4467a8f3 100644
--- a/c++/greptime/v1/meta/ddl.pb.cc
+++ b/c++/greptime/v1/meta/ddl.pb.cc
@@ -144,7 +144,7 @@ struct DropDatabaseTaskDefaultTypeInternal {
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 DropDatabaseTaskDefaultTypeInternal _DropDatabaseTask_default_instance_;
 PROTOBUF_CONSTEXPR CreateFlowTask::CreateFlowTask(
     ::_pbi::ConstantInitialized): _impl_{
-    /*decltype(_impl_.create_flow_task_)*/nullptr
+    /*decltype(_impl_.create_flow_)*/nullptr
   , /*decltype(_impl_._cached_size_)*/{}} {}
 struct CreateFlowTaskDefaultTypeInternal {
   PROTOBUF_CONSTEXPR CreateFlowTaskDefaultTypeInternal()
@@ -157,7 +157,7 @@ struct CreateFlowTaskDefaultTypeInternal {
 PROTOBUF_ATTRIBUTE_NO_DESTROY PROTOBUF_CONSTINIT PROTOBUF_ATTRIBUTE_INIT_PRIORITY1 CreateFlowTaskDefaultTypeInternal _CreateFlowTask_default_instance_;
 PROTOBUF_CONSTEXPR DropFlowTask::DropFlowTask(
     ::_pbi::ConstantInitialized): _impl_{
-    /*decltype(_impl_.drop_flow_task_)*/nullptr
+    /*decltype(_impl_.drop_flow_)*/nullptr
   , /*decltype(_impl_._cached_size_)*/{}} {}
 struct DropFlowTaskDefaultTypeInternal {
   PROTOBUF_CONSTEXPR DropFlowTaskDefaultTypeInternal()
@@ -278,14 +278,14 @@ const uint32_t TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets[] PROTOBU
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::CreateFlowTask, _impl_.create_flow_task_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::CreateFlowTask, _impl_.create_flow_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DropFlowTask, _internal_metadata_),
   ~0u,  // no _extensions_
   ~0u,  // no _oneof_case_
   ~0u,  // no _weak_field_map_
   ~0u,  // no _inlined_string_donated_
-  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DropFlowTask, _impl_.drop_flow_task_),
+  PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DropFlowTask, _impl_.drop_flow_),
   ~0u,  // no _has_bits_
   PROTOBUF_FIELD_OFFSET(::greptime::v1::meta::DdlTaskRequest, _internal_metadata_),
   ~0u,  // no _extensions_
@@ -369,38 +369,38 @@ const char descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto[] PROTOB
   "ask\"K\n\021TruncateTableTask\0226\n\016truncate_tab"
   "le\030\001 \001(\0132\036.greptime.v1.TruncateTableExpr"
   "\"H\n\020DropDatabaseTask\0224\n\rdrop_database\030\001 "
-  "\001(\0132\035.greptime.v1.DropDatabaseExpr\"K\n\016Cr"
-  "eateFlowTask\0229\n\020create_flow_task\030\001 \001(\0132\037"
-  ".greptime.v1.CreateFlowTaskExpr\"E\n\014DropF"
-  "lowTask\0225\n\016drop_flow_task\030\001 \001(\0132\035.grepti"
-  "me.v1.DropFlowTaskExpr\"\207\006\n\016DdlTaskReques"
-  "t\022/\n\006header\030\001 \001(\0132\037.greptime.v1.meta.Req"
-  "uestHeader\022>\n\021create_table_task\030\002 \001(\0132!."
-  "greptime.v1.meta.CreateTableTaskH\000\022:\n\017dr"
-  "op_table_task\030\003 \001(\0132\037.greptime.v1.meta.D"
-  "ropTableTaskH\000\022<\n\020alter_table_task\030\004 \001(\013"
-  "2 .greptime.v1.meta.AlterTableTaskH\000\022B\n\023"
-  "truncate_table_task\030\005 \001(\0132#.greptime.v1."
-  "meta.TruncateTableTaskH\000\022@\n\022create_table"
-  "_tasks\030\006 \001(\0132\".greptime.v1.meta.CreateTa"
-  "bleTasksH\000\022<\n\020drop_table_tasks\030\007 \001(\0132 .g"
-  "reptime.v1.meta.DropTableTasksH\000\022>\n\021alte"
-  "r_table_tasks\030\010 \001(\0132!.greptime.v1.meta.A"
-  "lterTableTasksH\000\022@\n\022drop_database_task\030\t"
-  " \001(\0132\".greptime.v1.meta.DropDatabaseTask"
-  "H\000\022D\n\024create_database_task\030\n \001(\0132$.grept"
-  "ime.v1.meta.CreateDatabaseTaskH\000\022<\n\020crea"
-  "te_flow_task\030\013 \001(\0132 .greptime.v1.meta.Cr"
-  "eateFlowTaskH\000\0228\n\016drop_flow_task\030\014 \001(\0132\036"
-  ".greptime.v1.meta.DropFlowTaskH\000B\006\n\004task"
-  "\"\312\001\n\017DdlTaskResponse\0220\n\006header\030\001 \001(\0132 .g"
-  "reptime.v1.meta.ResponseHeader\022*\n\003pid\030\002 "
-  "\001(\0132\035.greptime.v1.meta.ProcedureId\022+\n\010ta"
-  "ble_id\030\004 \001(\0132\031.greptime.v1.meta.TableId\022"
-  ",\n\ttable_ids\030\005 \003(\0132\031.greptime.v1.meta.Ta"
-  "bleId*#\n\013DdlTaskType\022\n\n\006Create\020\000\022\010\n\004Drop"
-  "\020\001B<Z:github.com/GreptimeTeam/greptime-p"
-  "roto/go/greptime/v1/metab\006proto3"
+  "\001(\0132\035.greptime.v1.DropDatabaseExpr\"B\n\016Cr"
+  "eateFlowTask\0220\n\013create_flow\030\001 \001(\0132\033.grep"
+  "time.v1.CreateFlowExpr\"<\n\014DropFlowTask\022,"
+  "\n\tdrop_flow\030\001 \001(\0132\031.greptime.v1.DropFlow"
+  "Expr\"\207\006\n\016DdlTaskRequest\022/\n\006header\030\001 \001(\0132"
+  "\037.greptime.v1.meta.RequestHeader\022>\n\021crea"
+  "te_table_task\030\002 \001(\0132!.greptime.v1.meta.C"
+  "reateTableTaskH\000\022:\n\017drop_table_task\030\003 \001("
+  "\0132\037.greptime.v1.meta.DropTableTaskH\000\022<\n\020"
+  "alter_table_task\030\004 \001(\0132 .greptime.v1.met"
+  "a.AlterTableTaskH\000\022B\n\023truncate_table_tas"
+  "k\030\005 \001(\0132#.greptime.v1.meta.TruncateTable"
+  "TaskH\000\022@\n\022create_table_tasks\030\006 \001(\0132\".gre"
+  "ptime.v1.meta.CreateTableTasksH\000\022<\n\020drop"
+  "_table_tasks\030\007 \001(\0132 .greptime.v1.meta.Dr"
+  "opTableTasksH\000\022>\n\021alter_table_tasks\030\010 \001("
+  "\0132!.greptime.v1.meta.AlterTableTasksH\000\022@"
+  "\n\022drop_database_task\030\t \001(\0132\".greptime.v1"
+  ".meta.DropDatabaseTaskH\000\022D\n\024create_datab"
+  "ase_task\030\n \001(\0132$.greptime.v1.meta.Create"
+  "DatabaseTaskH\000\022<\n\020create_flow_task\030\013 \001(\013"
+  "2 .greptime.v1.meta.CreateFlowTaskH\000\0228\n\016"
+  "drop_flow_task\030\014 \001(\0132\036.greptime.v1.meta."
+  "DropFlowTaskH\000B\006\n\004task\"\312\001\n\017DdlTaskRespon"
+  "se\0220\n\006header\030\001 \001(\0132 .greptime.v1.meta.Re"
+  "sponseHeader\022*\n\003pid\030\002 \001(\0132\035.greptime.v1."
+  "meta.ProcedureId\022+\n\010table_id\030\004 \001(\0132\031.gre"
+  "ptime.v1.meta.TableId\022,\n\ttable_ids\030\005 \003(\013"
+  "2\031.greptime.v1.meta.TableId*#\n\013DdlTaskTy"
+  "pe\022\n\n\006Create\020\000\022\010\n\004Drop\020\001B<Z:github.com/G"
+  "reptimeTeam/greptime-proto/go/greptime/v"
+  "1/metab\006proto3"
   ;
 static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps[3] = {
   &::descriptor_table_greptime_2fv1_2fddl_2eproto,
@@ -409,7 +409,7 @@ static const ::_pbi::DescriptorTable* const descriptor_table_greptime_2fv1_2fmet
 };
 static ::_pbi::once_flag descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once;
 const ::_pbi::DescriptorTable descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto = {
-    false, false, 2072, descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto,
+    false, false, 2054, descriptor_table_protodef_greptime_2fv1_2fmeta_2fddl_2eproto,
     "greptime/v1/meta/ddl.proto",
     &descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_once, descriptor_table_greptime_2fv1_2fmeta_2fddl_2eproto_deps, 3, 13,
     schemas, file_default_instances, TableStruct_greptime_2fv1_2fmeta_2fddl_2eproto::offsets,
@@ -2277,18 +2277,18 @@ ::PROTOBUF_NAMESPACE_ID::Metadata DropDatabaseTask::GetMetadata() const {
 
 class CreateFlowTask::_Internal {
  public:
-  static const ::greptime::v1::CreateFlowTaskExpr& create_flow_task(const CreateFlowTask* msg);
+  static const ::greptime::v1::CreateFlowExpr& create_flow(const CreateFlowTask* msg);
 };
 
-const ::greptime::v1::CreateFlowTaskExpr&
-CreateFlowTask::_Internal::create_flow_task(const CreateFlowTask* msg) {
-  return *msg->_impl_.create_flow_task_;
+const ::greptime::v1::CreateFlowExpr&
+CreateFlowTask::_Internal::create_flow(const CreateFlowTask* msg) {
+  return *msg->_impl_.create_flow_;
 }
-void CreateFlowTask::clear_create_flow_task() {
-  if (GetArenaForAllocation() == nullptr && _impl_.create_flow_task_ != nullptr) {
-    delete _impl_.create_flow_task_;
+void CreateFlowTask::clear_create_flow() {
+  if (GetArenaForAllocation() == nullptr && _impl_.create_flow_ != nullptr) {
+    delete _impl_.create_flow_;
   }
-  _impl_.create_flow_task_ = nullptr;
+  _impl_.create_flow_ = nullptr;
 }
 CreateFlowTask::CreateFlowTask(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
@@ -2300,12 +2300,12 @@ CreateFlowTask::CreateFlowTask(const CreateFlowTask& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
   CreateFlowTask* const _this = this; (void)_this;
   new (&_impl_) Impl_{
-      decltype(_impl_.create_flow_task_){nullptr}
+      decltype(_impl_.create_flow_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  if (from._internal_has_create_flow_task()) {
-    _this->_impl_.create_flow_task_ = new ::greptime::v1::CreateFlowTaskExpr(*from._impl_.create_flow_task_);
+  if (from._internal_has_create_flow()) {
+    _this->_impl_.create_flow_ = new ::greptime::v1::CreateFlowExpr(*from._impl_.create_flow_);
   }
   // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.CreateFlowTask)
 }
@@ -2315,7 +2315,7 @@ inline void CreateFlowTask::SharedCtor(
   (void)arena;
   (void)is_message_owned;
   new (&_impl_) Impl_{
-      decltype(_impl_.create_flow_task_){nullptr}
+      decltype(_impl_.create_flow_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}
   };
 }
@@ -2331,7 +2331,7 @@ CreateFlowTask::~CreateFlowTask() {
 
 inline void CreateFlowTask::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
-  if (this != internal_default_instance()) delete _impl_.create_flow_task_;
+  if (this != internal_default_instance()) delete _impl_.create_flow_;
 }
 
 void CreateFlowTask::SetCachedSize(int size) const {
@@ -2344,10 +2344,10 @@ void CreateFlowTask::Clear() {
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  if (GetArenaForAllocation() == nullptr && _impl_.create_flow_task_ != nullptr) {
-    delete _impl_.create_flow_task_;
+  if (GetArenaForAllocation() == nullptr && _impl_.create_flow_ != nullptr) {
+    delete _impl_.create_flow_;
   }
-  _impl_.create_flow_task_ = nullptr;
+  _impl_.create_flow_ = nullptr;
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
@@ -2357,10 +2357,10 @@ const char* CreateFlowTask::_InternalParse(const char* ptr, ::_pbi::ParseContext
     uint32_t tag;
     ptr = ::_pbi::ReadTag(ptr, &tag);
     switch (tag >> 3) {
-      // .greptime.v1.CreateFlowTaskExpr create_flow_task = 1;
+      // .greptime.v1.CreateFlowExpr create_flow = 1;
       case 1:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
-          ptr = ctx->ParseMessage(_internal_mutable_create_flow_task(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_create_flow(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -2394,11 +2394,11 @@ uint8_t* CreateFlowTask::_InternalSerialize(
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  // .greptime.v1.CreateFlowTaskExpr create_flow_task = 1;
-  if (this->_internal_has_create_flow_task()) {
+  // .greptime.v1.CreateFlowExpr create_flow = 1;
+  if (this->_internal_has_create_flow()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(1, _Internal::create_flow_task(this),
-        _Internal::create_flow_task(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(1, _Internal::create_flow(this),
+        _Internal::create_flow(this).GetCachedSize(), target, stream);
   }
 
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
@@ -2417,11 +2417,11 @@ size_t CreateFlowTask::ByteSizeLong() const {
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  // .greptime.v1.CreateFlowTaskExpr create_flow_task = 1;
-  if (this->_internal_has_create_flow_task()) {
+  // .greptime.v1.CreateFlowExpr create_flow = 1;
+  if (this->_internal_has_create_flow()) {
     total_size += 1 +
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-        *_impl_.create_flow_task_);
+        *_impl_.create_flow_);
   }
 
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
@@ -2442,9 +2442,9 @@ void CreateFlowTask::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const :
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  if (from._internal_has_create_flow_task()) {
-    _this->_internal_mutable_create_flow_task()->::greptime::v1::CreateFlowTaskExpr::MergeFrom(
-        from._internal_create_flow_task());
+  if (from._internal_has_create_flow()) {
+    _this->_internal_mutable_create_flow()->::greptime::v1::CreateFlowExpr::MergeFrom(
+        from._internal_create_flow());
   }
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
@@ -2463,7 +2463,7 @@ bool CreateFlowTask::IsInitialized() const {
 void CreateFlowTask::InternalSwap(CreateFlowTask* other) {
   using std::swap;
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
-  swap(_impl_.create_flow_task_, other->_impl_.create_flow_task_);
+  swap(_impl_.create_flow_, other->_impl_.create_flow_);
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowTask::GetMetadata() const {
@@ -2476,18 +2476,18 @@ ::PROTOBUF_NAMESPACE_ID::Metadata CreateFlowTask::GetMetadata() const {
 
 class DropFlowTask::_Internal {
  public:
-  static const ::greptime::v1::DropFlowTaskExpr& drop_flow_task(const DropFlowTask* msg);
+  static const ::greptime::v1::DropFlowExpr& drop_flow(const DropFlowTask* msg);
 };
 
-const ::greptime::v1::DropFlowTaskExpr&
-DropFlowTask::_Internal::drop_flow_task(const DropFlowTask* msg) {
-  return *msg->_impl_.drop_flow_task_;
+const ::greptime::v1::DropFlowExpr&
+DropFlowTask::_Internal::drop_flow(const DropFlowTask* msg) {
+  return *msg->_impl_.drop_flow_;
 }
-void DropFlowTask::clear_drop_flow_task() {
-  if (GetArenaForAllocation() == nullptr && _impl_.drop_flow_task_ != nullptr) {
-    delete _impl_.drop_flow_task_;
+void DropFlowTask::clear_drop_flow() {
+  if (GetArenaForAllocation() == nullptr && _impl_.drop_flow_ != nullptr) {
+    delete _impl_.drop_flow_;
   }
-  _impl_.drop_flow_task_ = nullptr;
+  _impl_.drop_flow_ = nullptr;
 }
 DropFlowTask::DropFlowTask(::PROTOBUF_NAMESPACE_ID::Arena* arena,
                          bool is_message_owned)
@@ -2499,12 +2499,12 @@ DropFlowTask::DropFlowTask(const DropFlowTask& from)
   : ::PROTOBUF_NAMESPACE_ID::Message() {
   DropFlowTask* const _this = this; (void)_this;
   new (&_impl_) Impl_{
-      decltype(_impl_.drop_flow_task_){nullptr}
+      decltype(_impl_.drop_flow_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}};
 
   _internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
-  if (from._internal_has_drop_flow_task()) {
-    _this->_impl_.drop_flow_task_ = new ::greptime::v1::DropFlowTaskExpr(*from._impl_.drop_flow_task_);
+  if (from._internal_has_drop_flow()) {
+    _this->_impl_.drop_flow_ = new ::greptime::v1::DropFlowExpr(*from._impl_.drop_flow_);
   }
   // @@protoc_insertion_point(copy_constructor:greptime.v1.meta.DropFlowTask)
 }
@@ -2514,7 +2514,7 @@ inline void DropFlowTask::SharedCtor(
   (void)arena;
   (void)is_message_owned;
   new (&_impl_) Impl_{
-      decltype(_impl_.drop_flow_task_){nullptr}
+      decltype(_impl_.drop_flow_){nullptr}
     , /*decltype(_impl_._cached_size_)*/{}
   };
 }
@@ -2530,7 +2530,7 @@ DropFlowTask::~DropFlowTask() {
 
 inline void DropFlowTask::SharedDtor() {
   GOOGLE_DCHECK(GetArenaForAllocation() == nullptr);
-  if (this != internal_default_instance()) delete _impl_.drop_flow_task_;
+  if (this != internal_default_instance()) delete _impl_.drop_flow_;
 }
 
 void DropFlowTask::SetCachedSize(int size) const {
@@ -2543,10 +2543,10 @@ void DropFlowTask::Clear() {
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  if (GetArenaForAllocation() == nullptr && _impl_.drop_flow_task_ != nullptr) {
-    delete _impl_.drop_flow_task_;
+  if (GetArenaForAllocation() == nullptr && _impl_.drop_flow_ != nullptr) {
+    delete _impl_.drop_flow_;
   }
-  _impl_.drop_flow_task_ = nullptr;
+  _impl_.drop_flow_ = nullptr;
   _internal_metadata_.Clear<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>();
 }
 
@@ -2556,10 +2556,10 @@ const char* DropFlowTask::_InternalParse(const char* ptr, ::_pbi::ParseContext*
     uint32_t tag;
     ptr = ::_pbi::ReadTag(ptr, &tag);
     switch (tag >> 3) {
-      // .greptime.v1.DropFlowTaskExpr drop_flow_task = 1;
+      // .greptime.v1.DropFlowExpr drop_flow = 1;
       case 1:
         if (PROTOBUF_PREDICT_TRUE(static_cast<uint8_t>(tag) == 10)) {
-          ptr = ctx->ParseMessage(_internal_mutable_drop_flow_task(), ptr);
+          ptr = ctx->ParseMessage(_internal_mutable_drop_flow(), ptr);
           CHK_(ptr);
         } else
           goto handle_unusual;
@@ -2593,11 +2593,11 @@ uint8_t* DropFlowTask::_InternalSerialize(
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  // .greptime.v1.DropFlowTaskExpr drop_flow_task = 1;
-  if (this->_internal_has_drop_flow_task()) {
+  // .greptime.v1.DropFlowExpr drop_flow = 1;
+  if (this->_internal_has_drop_flow()) {
     target = ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::
-      InternalWriteMessage(1, _Internal::drop_flow_task(this),
-        _Internal::drop_flow_task(this).GetCachedSize(), target, stream);
+      InternalWriteMessage(1, _Internal::drop_flow(this),
+        _Internal::drop_flow(this).GetCachedSize(), target, stream);
   }
 
   if (PROTOBUF_PREDICT_FALSE(_internal_metadata_.have_unknown_fields())) {
@@ -2616,11 +2616,11 @@ size_t DropFlowTask::ByteSizeLong() const {
   // Prevent compiler warnings about cached_has_bits being unused
   (void) cached_has_bits;
 
-  // .greptime.v1.DropFlowTaskExpr drop_flow_task = 1;
-  if (this->_internal_has_drop_flow_task()) {
+  // .greptime.v1.DropFlowExpr drop_flow = 1;
+  if (this->_internal_has_drop_flow()) {
     total_size += 1 +
       ::PROTOBUF_NAMESPACE_ID::internal::WireFormatLite::MessageSize(
-        *_impl_.drop_flow_task_);
+        *_impl_.drop_flow_);
   }
 
   return MaybeComputeUnknownFieldsSize(total_size, &_impl_._cached_size_);
@@ -2641,9 +2641,9 @@ void DropFlowTask::MergeImpl(::PROTOBUF_NAMESPACE_ID::Message& to_msg, const ::P
   uint32_t cached_has_bits = 0;
   (void) cached_has_bits;
 
-  if (from._internal_has_drop_flow_task()) {
-    _this->_internal_mutable_drop_flow_task()->::greptime::v1::DropFlowTaskExpr::MergeFrom(
-        from._internal_drop_flow_task());
+  if (from._internal_has_drop_flow()) {
+    _this->_internal_mutable_drop_flow()->::greptime::v1::DropFlowExpr::MergeFrom(
+        from._internal_drop_flow());
   }
   _this->_internal_metadata_.MergeFrom<::PROTOBUF_NAMESPACE_ID::UnknownFieldSet>(from._internal_metadata_);
 }
@@ -2662,7 +2662,7 @@ bool DropFlowTask::IsInitialized() const {
 void DropFlowTask::InternalSwap(DropFlowTask* other) {
   using std::swap;
   _internal_metadata_.InternalSwap(&other->_internal_metadata_);
-  swap(_impl_.drop_flow_task_, other->_impl_.drop_flow_task_);
+  swap(_impl_.drop_flow_, other->_impl_.drop_flow_);
 }
 
 ::PROTOBUF_NAMESPACE_ID::Metadata DropFlowTask::GetMetadata() const {
diff --git a/c++/greptime/v1/meta/ddl.pb.h b/c++/greptime/v1/meta/ddl.pb.h
index 1acd84bf..2bfee292 100644
--- a/c++/greptime/v1/meta/ddl.pb.h
+++ b/c++/greptime/v1/meta/ddl.pb.h
@@ -1709,25 +1709,25 @@ class CreateFlowTask final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kCreateFlowTaskFieldNumber = 1,
+    kCreateFlowFieldNumber = 1,
   };
-  // .greptime.v1.CreateFlowTaskExpr create_flow_task = 1;
-  bool has_create_flow_task() const;
+  // .greptime.v1.CreateFlowExpr create_flow = 1;
+  bool has_create_flow() const;
   private:
-  bool _internal_has_create_flow_task() const;
+  bool _internal_has_create_flow() const;
   public:
-  void clear_create_flow_task();
-  const ::greptime::v1::CreateFlowTaskExpr& create_flow_task() const;
-  PROTOBUF_NODISCARD ::greptime::v1::CreateFlowTaskExpr* release_create_flow_task();
-  ::greptime::v1::CreateFlowTaskExpr* mutable_create_flow_task();
-  void set_allocated_create_flow_task(::greptime::v1::CreateFlowTaskExpr* create_flow_task);
+  void clear_create_flow();
+  const ::greptime::v1::CreateFlowExpr& create_flow() const;
+  PROTOBUF_NODISCARD ::greptime::v1::CreateFlowExpr* release_create_flow();
+  ::greptime::v1::CreateFlowExpr* mutable_create_flow();
+  void set_allocated_create_flow(::greptime::v1::CreateFlowExpr* create_flow);
   private:
-  const ::greptime::v1::CreateFlowTaskExpr& _internal_create_flow_task() const;
-  ::greptime::v1::CreateFlowTaskExpr* _internal_mutable_create_flow_task();
+  const ::greptime::v1::CreateFlowExpr& _internal_create_flow() const;
+  ::greptime::v1::CreateFlowExpr* _internal_mutable_create_flow();
   public:
-  void unsafe_arena_set_allocated_create_flow_task(
-      ::greptime::v1::CreateFlowTaskExpr* create_flow_task);
-  ::greptime::v1::CreateFlowTaskExpr* unsafe_arena_release_create_flow_task();
+  void unsafe_arena_set_allocated_create_flow(
+      ::greptime::v1::CreateFlowExpr* create_flow);
+  ::greptime::v1::CreateFlowExpr* unsafe_arena_release_create_flow();
 
   // @@protoc_insertion_point(class_scope:greptime.v1.meta.CreateFlowTask)
  private:
@@ -1737,7 +1737,7 @@ class CreateFlowTask final :
   typedef void InternalArenaConstructable_;
   typedef void DestructorSkippable_;
   struct Impl_ {
-    ::greptime::v1::CreateFlowTaskExpr* create_flow_task_;
+    ::greptime::v1::CreateFlowExpr* create_flow_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
   };
   union { Impl_ _impl_; };
@@ -1866,25 +1866,25 @@ class DropFlowTask final :
   // accessors -------------------------------------------------------
 
   enum : int {
-    kDropFlowTaskFieldNumber = 1,
+    kDropFlowFieldNumber = 1,
   };
-  // .greptime.v1.DropFlowTaskExpr drop_flow_task = 1;
-  bool has_drop_flow_task() const;
+  // .greptime.v1.DropFlowExpr drop_flow = 1;
+  bool has_drop_flow() const;
   private:
-  bool _internal_has_drop_flow_task() const;
+  bool _internal_has_drop_flow() const;
   public:
-  void clear_drop_flow_task();
-  const ::greptime::v1::DropFlowTaskExpr& drop_flow_task() const;
-  PROTOBUF_NODISCARD ::greptime::v1::DropFlowTaskExpr* release_drop_flow_task();
-  ::greptime::v1::DropFlowTaskExpr* mutable_drop_flow_task();
-  void set_allocated_drop_flow_task(::greptime::v1::DropFlowTaskExpr* drop_flow_task);
+  void clear_drop_flow();
+  const ::greptime::v1::DropFlowExpr& drop_flow() const;
+  PROTOBUF_NODISCARD ::greptime::v1::DropFlowExpr* release_drop_flow();
+  ::greptime::v1::DropFlowExpr* mutable_drop_flow();
+  void set_allocated_drop_flow(::greptime::v1::DropFlowExpr* drop_flow);
   private:
-  const ::greptime::v1::DropFlowTaskExpr& _internal_drop_flow_task() const;
-  ::greptime::v1::DropFlowTaskExpr* _internal_mutable_drop_flow_task();
+  const ::greptime::v1::DropFlowExpr& _internal_drop_flow() const;
+  ::greptime::v1::DropFlowExpr* _internal_mutable_drop_flow();
   public:
-  void unsafe_arena_set_allocated_drop_flow_task(
-      ::greptime::v1::DropFlowTaskExpr* drop_flow_task);
-  ::greptime::v1::DropFlowTaskExpr* unsafe_arena_release_drop_flow_task();
+  void unsafe_arena_set_allocated_drop_flow(
+      ::greptime::v1::DropFlowExpr* drop_flow);
+  ::greptime::v1::DropFlowExpr* unsafe_arena_release_drop_flow();
 
   // @@protoc_insertion_point(class_scope:greptime.v1.meta.DropFlowTask)
  private:
@@ -1894,7 +1894,7 @@ class DropFlowTask final :
   typedef void InternalArenaConstructable_;
   typedef void DestructorSkippable_;
   struct Impl_ {
-    ::greptime::v1::DropFlowTaskExpr* drop_flow_task_;
+    ::greptime::v1::DropFlowExpr* drop_flow_;
     mutable ::PROTOBUF_NAMESPACE_ID::internal::CachedSize _cached_size_;
   };
   union { Impl_ _impl_; };
@@ -3295,39 +3295,39 @@ inline void DropDatabaseTask::set_allocated_drop_database(::greptime::v1::DropDa
 
 // CreateFlowTask
 
-// .greptime.v1.CreateFlowTaskExpr create_flow_task = 1;
-inline bool CreateFlowTask::_internal_has_create_flow_task() const {
-  return this != internal_default_instance() && _impl_.create_flow_task_ != nullptr;
+// .greptime.v1.CreateFlowExpr create_flow = 1;
+inline bool CreateFlowTask::_internal_has_create_flow() const {
+  return this != internal_default_instance() && _impl_.create_flow_ != nullptr;
 }
-inline bool CreateFlowTask::has_create_flow_task() const {
-  return _internal_has_create_flow_task();
+inline bool CreateFlowTask::has_create_flow() const {
+  return _internal_has_create_flow();
 }
-inline const ::greptime::v1::CreateFlowTaskExpr& CreateFlowTask::_internal_create_flow_task() const {
-  const ::greptime::v1::CreateFlowTaskExpr* p = _impl_.create_flow_task_;
-  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::CreateFlowTaskExpr&>(
-      ::greptime::v1::_CreateFlowTaskExpr_default_instance_);
+inline const ::greptime::v1::CreateFlowExpr& CreateFlowTask::_internal_create_flow() const {
+  const ::greptime::v1::CreateFlowExpr* p = _impl_.create_flow_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::CreateFlowExpr&>(
+      ::greptime::v1::_CreateFlowExpr_default_instance_);
 }
-inline const ::greptime::v1::CreateFlowTaskExpr& CreateFlowTask::create_flow_task() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.meta.CreateFlowTask.create_flow_task)
-  return _internal_create_flow_task();
+inline const ::greptime::v1::CreateFlowExpr& CreateFlowTask::create_flow() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.CreateFlowTask.create_flow)
+  return _internal_create_flow();
 }
-inline void CreateFlowTask::unsafe_arena_set_allocated_create_flow_task(
-    ::greptime::v1::CreateFlowTaskExpr* create_flow_task) {
+inline void CreateFlowTask::unsafe_arena_set_allocated_create_flow(
+    ::greptime::v1::CreateFlowExpr* create_flow) {
   if (GetArenaForAllocation() == nullptr) {
-    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.create_flow_task_);
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.create_flow_);
   }
-  _impl_.create_flow_task_ = create_flow_task;
-  if (create_flow_task) {
+  _impl_.create_flow_ = create_flow;
+  if (create_flow) {
     
   } else {
     
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.CreateFlowTask.create_flow_task)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.CreateFlowTask.create_flow)
 }
-inline ::greptime::v1::CreateFlowTaskExpr* CreateFlowTask::release_create_flow_task() {
+inline ::greptime::v1::CreateFlowExpr* CreateFlowTask::release_create_flow() {
   
-  ::greptime::v1::CreateFlowTaskExpr* temp = _impl_.create_flow_task_;
-  _impl_.create_flow_task_ = nullptr;
+  ::greptime::v1::CreateFlowExpr* temp = _impl_.create_flow_;
+  _impl_.create_flow_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
   temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
@@ -3339,84 +3339,84 @@ inline ::greptime::v1::CreateFlowTaskExpr* CreateFlowTask::release_create_flow_t
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return temp;
 }
-inline ::greptime::v1::CreateFlowTaskExpr* CreateFlowTask::unsafe_arena_release_create_flow_task() {
-  // @@protoc_insertion_point(field_release:greptime.v1.meta.CreateFlowTask.create_flow_task)
+inline ::greptime::v1::CreateFlowExpr* CreateFlowTask::unsafe_arena_release_create_flow() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.CreateFlowTask.create_flow)
   
-  ::greptime::v1::CreateFlowTaskExpr* temp = _impl_.create_flow_task_;
-  _impl_.create_flow_task_ = nullptr;
+  ::greptime::v1::CreateFlowExpr* temp = _impl_.create_flow_;
+  _impl_.create_flow_ = nullptr;
   return temp;
 }
-inline ::greptime::v1::CreateFlowTaskExpr* CreateFlowTask::_internal_mutable_create_flow_task() {
+inline ::greptime::v1::CreateFlowExpr* CreateFlowTask::_internal_mutable_create_flow() {
   
-  if (_impl_.create_flow_task_ == nullptr) {
-    auto* p = CreateMaybeMessage<::greptime::v1::CreateFlowTaskExpr>(GetArenaForAllocation());
-    _impl_.create_flow_task_ = p;
+  if (_impl_.create_flow_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::CreateFlowExpr>(GetArenaForAllocation());
+    _impl_.create_flow_ = p;
   }
-  return _impl_.create_flow_task_;
+  return _impl_.create_flow_;
 }
-inline ::greptime::v1::CreateFlowTaskExpr* CreateFlowTask::mutable_create_flow_task() {
-  ::greptime::v1::CreateFlowTaskExpr* _msg = _internal_mutable_create_flow_task();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.CreateFlowTask.create_flow_task)
+inline ::greptime::v1::CreateFlowExpr* CreateFlowTask::mutable_create_flow() {
+  ::greptime::v1::CreateFlowExpr* _msg = _internal_mutable_create_flow();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.CreateFlowTask.create_flow)
   return _msg;
 }
-inline void CreateFlowTask::set_allocated_create_flow_task(::greptime::v1::CreateFlowTaskExpr* create_flow_task) {
+inline void CreateFlowTask::set_allocated_create_flow(::greptime::v1::CreateFlowExpr* create_flow) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   if (message_arena == nullptr) {
-    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.create_flow_task_);
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.create_flow_);
   }
-  if (create_flow_task) {
+  if (create_flow) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
         ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
-                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(create_flow_task));
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(create_flow));
     if (message_arena != submessage_arena) {
-      create_flow_task = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, create_flow_task, submessage_arena);
+      create_flow = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, create_flow, submessage_arena);
     }
     
   } else {
     
   }
-  _impl_.create_flow_task_ = create_flow_task;
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.CreateFlowTask.create_flow_task)
+  _impl_.create_flow_ = create_flow;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.CreateFlowTask.create_flow)
 }
 
 // -------------------------------------------------------------------
 
 // DropFlowTask
 
-// .greptime.v1.DropFlowTaskExpr drop_flow_task = 1;
-inline bool DropFlowTask::_internal_has_drop_flow_task() const {
-  return this != internal_default_instance() && _impl_.drop_flow_task_ != nullptr;
+// .greptime.v1.DropFlowExpr drop_flow = 1;
+inline bool DropFlowTask::_internal_has_drop_flow() const {
+  return this != internal_default_instance() && _impl_.drop_flow_ != nullptr;
 }
-inline bool DropFlowTask::has_drop_flow_task() const {
-  return _internal_has_drop_flow_task();
+inline bool DropFlowTask::has_drop_flow() const {
+  return _internal_has_drop_flow();
 }
-inline const ::greptime::v1::DropFlowTaskExpr& DropFlowTask::_internal_drop_flow_task() const {
-  const ::greptime::v1::DropFlowTaskExpr* p = _impl_.drop_flow_task_;
-  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::DropFlowTaskExpr&>(
-      ::greptime::v1::_DropFlowTaskExpr_default_instance_);
+inline const ::greptime::v1::DropFlowExpr& DropFlowTask::_internal_drop_flow() const {
+  const ::greptime::v1::DropFlowExpr* p = _impl_.drop_flow_;
+  return p != nullptr ? *p : reinterpret_cast<const ::greptime::v1::DropFlowExpr&>(
+      ::greptime::v1::_DropFlowExpr_default_instance_);
 }
-inline const ::greptime::v1::DropFlowTaskExpr& DropFlowTask::drop_flow_task() const {
-  // @@protoc_insertion_point(field_get:greptime.v1.meta.DropFlowTask.drop_flow_task)
-  return _internal_drop_flow_task();
+inline const ::greptime::v1::DropFlowExpr& DropFlowTask::drop_flow() const {
+  // @@protoc_insertion_point(field_get:greptime.v1.meta.DropFlowTask.drop_flow)
+  return _internal_drop_flow();
 }
-inline void DropFlowTask::unsafe_arena_set_allocated_drop_flow_task(
-    ::greptime::v1::DropFlowTaskExpr* drop_flow_task) {
+inline void DropFlowTask::unsafe_arena_set_allocated_drop_flow(
+    ::greptime::v1::DropFlowExpr* drop_flow) {
   if (GetArenaForAllocation() == nullptr) {
-    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.drop_flow_task_);
+    delete reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.drop_flow_);
   }
-  _impl_.drop_flow_task_ = drop_flow_task;
-  if (drop_flow_task) {
+  _impl_.drop_flow_ = drop_flow;
+  if (drop_flow) {
     
   } else {
     
   }
-  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.DropFlowTask.drop_flow_task)
+  // @@protoc_insertion_point(field_unsafe_arena_set_allocated:greptime.v1.meta.DropFlowTask.drop_flow)
 }
-inline ::greptime::v1::DropFlowTaskExpr* DropFlowTask::release_drop_flow_task() {
+inline ::greptime::v1::DropFlowExpr* DropFlowTask::release_drop_flow() {
   
-  ::greptime::v1::DropFlowTaskExpr* temp = _impl_.drop_flow_task_;
-  _impl_.drop_flow_task_ = nullptr;
+  ::greptime::v1::DropFlowExpr* temp = _impl_.drop_flow_;
+  _impl_.drop_flow_ = nullptr;
 #ifdef PROTOBUF_FORCE_COPY_IN_RELEASE
   auto* old =  reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(temp);
   temp = ::PROTOBUF_NAMESPACE_ID::internal::DuplicateIfNonNull(temp);
@@ -3428,45 +3428,45 @@ inline ::greptime::v1::DropFlowTaskExpr* DropFlowTask::release_drop_flow_task()
 #endif  // !PROTOBUF_FORCE_COPY_IN_RELEASE
   return temp;
 }
-inline ::greptime::v1::DropFlowTaskExpr* DropFlowTask::unsafe_arena_release_drop_flow_task() {
-  // @@protoc_insertion_point(field_release:greptime.v1.meta.DropFlowTask.drop_flow_task)
+inline ::greptime::v1::DropFlowExpr* DropFlowTask::unsafe_arena_release_drop_flow() {
+  // @@protoc_insertion_point(field_release:greptime.v1.meta.DropFlowTask.drop_flow)
   
-  ::greptime::v1::DropFlowTaskExpr* temp = _impl_.drop_flow_task_;
-  _impl_.drop_flow_task_ = nullptr;
+  ::greptime::v1::DropFlowExpr* temp = _impl_.drop_flow_;
+  _impl_.drop_flow_ = nullptr;
   return temp;
 }
-inline ::greptime::v1::DropFlowTaskExpr* DropFlowTask::_internal_mutable_drop_flow_task() {
+inline ::greptime::v1::DropFlowExpr* DropFlowTask::_internal_mutable_drop_flow() {
   
-  if (_impl_.drop_flow_task_ == nullptr) {
-    auto* p = CreateMaybeMessage<::greptime::v1::DropFlowTaskExpr>(GetArenaForAllocation());
-    _impl_.drop_flow_task_ = p;
+  if (_impl_.drop_flow_ == nullptr) {
+    auto* p = CreateMaybeMessage<::greptime::v1::DropFlowExpr>(GetArenaForAllocation());
+    _impl_.drop_flow_ = p;
   }
-  return _impl_.drop_flow_task_;
+  return _impl_.drop_flow_;
 }
-inline ::greptime::v1::DropFlowTaskExpr* DropFlowTask::mutable_drop_flow_task() {
-  ::greptime::v1::DropFlowTaskExpr* _msg = _internal_mutable_drop_flow_task();
-  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.DropFlowTask.drop_flow_task)
+inline ::greptime::v1::DropFlowExpr* DropFlowTask::mutable_drop_flow() {
+  ::greptime::v1::DropFlowExpr* _msg = _internal_mutable_drop_flow();
+  // @@protoc_insertion_point(field_mutable:greptime.v1.meta.DropFlowTask.drop_flow)
   return _msg;
 }
-inline void DropFlowTask::set_allocated_drop_flow_task(::greptime::v1::DropFlowTaskExpr* drop_flow_task) {
+inline void DropFlowTask::set_allocated_drop_flow(::greptime::v1::DropFlowExpr* drop_flow) {
   ::PROTOBUF_NAMESPACE_ID::Arena* message_arena = GetArenaForAllocation();
   if (message_arena == nullptr) {
-    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.drop_flow_task_);
+    delete reinterpret_cast< ::PROTOBUF_NAMESPACE_ID::MessageLite*>(_impl_.drop_flow_);
   }
-  if (drop_flow_task) {
+  if (drop_flow) {
     ::PROTOBUF_NAMESPACE_ID::Arena* submessage_arena =
         ::PROTOBUF_NAMESPACE_ID::Arena::InternalGetOwningArena(
-                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(drop_flow_task));
+                reinterpret_cast<::PROTOBUF_NAMESPACE_ID::MessageLite*>(drop_flow));
     if (message_arena != submessage_arena) {
-      drop_flow_task = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
-          message_arena, drop_flow_task, submessage_arena);
+      drop_flow = ::PROTOBUF_NAMESPACE_ID::internal::GetOwnedMessage(
+          message_arena, drop_flow, submessage_arena);
     }
     
   } else {
     
   }
-  _impl_.drop_flow_task_ = drop_flow_task;
-  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DropFlowTask.drop_flow_task)
+  _impl_.drop_flow_ = drop_flow;
+  // @@protoc_insertion_point(field_set_allocated:greptime.v1.meta.DropFlowTask.drop_flow)
 }
 
 // -------------------------------------------------------------------
diff --git a/go/greptime/v1/ddl.pb.go b/go/greptime/v1/ddl.pb.go
index 7290ec17..fa869c83 100644
--- a/go/greptime/v1/ddl.pb.go
+++ b/go/greptime/v1/ddl.pb.go
@@ -96,8 +96,8 @@ type DdlRequest struct {
 	//	*DdlRequest_Alter
 	//	*DdlRequest_DropTable
 	//	*DdlRequest_TruncateTable
-	//	*DdlRequest_CreateFlowTask
-	//	*DdlRequest_DropFlowTask
+	//	*DdlRequest_CreateFlow
+	//	*DdlRequest_DropFlow
 	Expr isDdlRequest_Expr `protobuf_oneof:"expr"`
 }
 
@@ -175,16 +175,16 @@ func (x *DdlRequest) GetTruncateTable() *TruncateTableExpr {
 	return nil
 }
 
-func (x *DdlRequest) GetCreateFlowTask() *CreateFlowTaskExpr {
-	if x, ok := x.GetExpr().(*DdlRequest_CreateFlowTask); ok {
-		return x.CreateFlowTask
+func (x *DdlRequest) GetCreateFlow() *CreateFlowExpr {
+	if x, ok := x.GetExpr().(*DdlRequest_CreateFlow); ok {
+		return x.CreateFlow
 	}
 	return nil
 }
 
-func (x *DdlRequest) GetDropFlowTask() *DropFlowTaskExpr {
-	if x, ok := x.GetExpr().(*DdlRequest_DropFlowTask); ok {
-		return x.DropFlowTask
+func (x *DdlRequest) GetDropFlow() *DropFlowExpr {
+	if x, ok := x.GetExpr().(*DdlRequest_DropFlow); ok {
+		return x.DropFlow
 	}
 	return nil
 }
@@ -213,12 +213,12 @@ type DdlRequest_TruncateTable struct {
 	TruncateTable *TruncateTableExpr `protobuf:"bytes,7,opt,name=truncate_table,json=truncateTable,proto3,oneof"`
 }
 
-type DdlRequest_CreateFlowTask struct {
-	CreateFlowTask *CreateFlowTaskExpr `protobuf:"bytes,8,opt,name=create_flow_task,json=createFlowTask,proto3,oneof"`
+type DdlRequest_CreateFlow struct {
+	CreateFlow *CreateFlowExpr `protobuf:"bytes,8,opt,name=create_flow,json=createFlow,proto3,oneof"`
 }
 
-type DdlRequest_DropFlowTask struct {
-	DropFlowTask *DropFlowTaskExpr `protobuf:"bytes,9,opt,name=drop_flow_task,json=dropFlowTask,proto3,oneof"`
+type DdlRequest_DropFlow struct {
+	DropFlow *DropFlowExpr `protobuf:"bytes,9,opt,name=drop_flow,json=dropFlow,proto3,oneof"`
 }
 
 func (*DdlRequest_CreateDatabase) isDdlRequest_Expr() {}
@@ -231,18 +231,18 @@ func (*DdlRequest_DropTable) isDdlRequest_Expr() {}
 
 func (*DdlRequest_TruncateTable) isDdlRequest_Expr() {}
 
-func (*DdlRequest_CreateFlowTask) isDdlRequest_Expr() {}
+func (*DdlRequest_CreateFlow) isDdlRequest_Expr() {}
 
-func (*DdlRequest_DropFlowTask) isDdlRequest_Expr() {}
+func (*DdlRequest_DropFlow) isDdlRequest_Expr() {}
 
-// Create a flow task to run the SQL when new data arrives.
-type CreateFlowTaskExpr struct {
+// Create a flow to run the SQL when new data arrives.
+type CreateFlowExpr struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
 	CatalogName       string            `protobuf:"bytes,1,opt,name=catalog_name,json=catalogName,proto3" json:"catalog_name,omitempty"`
-	TaskName          string            `protobuf:"bytes,2,opt,name=task_name,json=taskName,proto3" json:"task_name,omitempty"`
+	FlowName          string            `protobuf:"bytes,2,opt,name=flow_name,json=flowName,proto3" json:"flow_name,omitempty"`
 	SourceTableNames  []*TableName      `protobuf:"bytes,3,rep,name=source_table_names,json=sourceTableNames,proto3" json:"source_table_names,omitempty"`
 	SinkTableName     *TableName        `protobuf:"bytes,4,opt,name=sink_table_name,json=sinkTableName,proto3" json:"sink_table_name,omitempty"`
 	OrReplace         bool              `protobuf:"varint,5,opt,name=or_replace,json=orReplace,proto3" json:"or_replace,omitempty"`
@@ -250,11 +250,11 @@ type CreateFlowTaskExpr struct {
 	ExpireWhen        string            `protobuf:"bytes,7,opt,name=expire_when,json=expireWhen,proto3" json:"expire_when,omitempty"`
 	Comment           string            `protobuf:"bytes,8,opt,name=comment,proto3" json:"comment,omitempty"`
 	Sql               string            `protobuf:"bytes,9,opt,name=sql,proto3" json:"sql,omitempty"`
-	TaskOptions       map[string]string `protobuf:"bytes,10,rep,name=task_options,json=taskOptions,proto3" json:"task_options,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
+	FlowOptions       map[string]string `protobuf:"bytes,10,rep,name=flow_options,json=flowOptions,proto3" json:"flow_options,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 }
 
-func (x *CreateFlowTaskExpr) Reset() {
-	*x = CreateFlowTaskExpr{}
+func (x *CreateFlowExpr) Reset() {
+	*x = CreateFlowExpr{}
 	if protoimpl.UnsafeEnabled {
 		mi := &file_greptime_v1_ddl_proto_msgTypes[1]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -262,13 +262,13 @@ func (x *CreateFlowTaskExpr) Reset() {
 	}
 }
 
-func (x *CreateFlowTaskExpr) String() string {
+func (x *CreateFlowExpr) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*CreateFlowTaskExpr) ProtoMessage() {}
+func (*CreateFlowExpr) ProtoMessage() {}
 
-func (x *CreateFlowTaskExpr) ProtoReflect() protoreflect.Message {
+func (x *CreateFlowExpr) ProtoReflect() protoreflect.Message {
 	mi := &file_greptime_v1_ddl_proto_msgTypes[1]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -280,93 +280,93 @@ func (x *CreateFlowTaskExpr) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use CreateFlowTaskExpr.ProtoReflect.Descriptor instead.
-func (*CreateFlowTaskExpr) Descriptor() ([]byte, []int) {
+// Deprecated: Use CreateFlowExpr.ProtoReflect.Descriptor instead.
+func (*CreateFlowExpr) Descriptor() ([]byte, []int) {
 	return file_greptime_v1_ddl_proto_rawDescGZIP(), []int{1}
 }
 
-func (x *CreateFlowTaskExpr) GetCatalogName() string {
+func (x *CreateFlowExpr) GetCatalogName() string {
 	if x != nil {
 		return x.CatalogName
 	}
 	return ""
 }
 
-func (x *CreateFlowTaskExpr) GetTaskName() string {
+func (x *CreateFlowExpr) GetFlowName() string {
 	if x != nil {
-		return x.TaskName
+		return x.FlowName
 	}
 	return ""
 }
 
-func (x *CreateFlowTaskExpr) GetSourceTableNames() []*TableName {
+func (x *CreateFlowExpr) GetSourceTableNames() []*TableName {
 	if x != nil {
 		return x.SourceTableNames
 	}
 	return nil
 }
 
-func (x *CreateFlowTaskExpr) GetSinkTableName() *TableName {
+func (x *CreateFlowExpr) GetSinkTableName() *TableName {
 	if x != nil {
 		return x.SinkTableName
 	}
 	return nil
 }
 
-func (x *CreateFlowTaskExpr) GetOrReplace() bool {
+func (x *CreateFlowExpr) GetOrReplace() bool {
 	if x != nil {
 		return x.OrReplace
 	}
 	return false
 }
 
-func (x *CreateFlowTaskExpr) GetCreateIfNotExists() bool {
+func (x *CreateFlowExpr) GetCreateIfNotExists() bool {
 	if x != nil {
 		return x.CreateIfNotExists
 	}
 	return false
 }
 
-func (x *CreateFlowTaskExpr) GetExpireWhen() string {
+func (x *CreateFlowExpr) GetExpireWhen() string {
 	if x != nil {
 		return x.ExpireWhen
 	}
 	return ""
 }
 
-func (x *CreateFlowTaskExpr) GetComment() string {
+func (x *CreateFlowExpr) GetComment() string {
 	if x != nil {
 		return x.Comment
 	}
 	return ""
 }
 
-func (x *CreateFlowTaskExpr) GetSql() string {
+func (x *CreateFlowExpr) GetSql() string {
 	if x != nil {
 		return x.Sql
 	}
 	return ""
 }
 
-func (x *CreateFlowTaskExpr) GetTaskOptions() map[string]string {
+func (x *CreateFlowExpr) GetFlowOptions() map[string]string {
 	if x != nil {
-		return x.TaskOptions
+		return x.FlowOptions
 	}
 	return nil
 }
 
-// Remove a flow task.
-type DropFlowTaskExpr struct {
+// Drop a flow.
+type DropFlowExpr struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
 	CatalogName string `protobuf:"bytes,1,opt,name=catalog_name,json=catalogName,proto3" json:"catalog_name,omitempty"`
-	TaskName    string `protobuf:"bytes,2,opt,name=task_name,json=taskName,proto3" json:"task_name,omitempty"`
+	FlowName    string `protobuf:"bytes,2,opt,name=flow_name,json=flowName,proto3" json:"flow_name,omitempty"`
 }
 
-func (x *DropFlowTaskExpr) Reset() {
-	*x = DropFlowTaskExpr{}
+func (x *DropFlowExpr) Reset() {
+	*x = DropFlowExpr{}
 	if protoimpl.UnsafeEnabled {
 		mi := &file_greptime_v1_ddl_proto_msgTypes[2]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -374,13 +374,13 @@ func (x *DropFlowTaskExpr) Reset() {
 	}
 }
 
-func (x *DropFlowTaskExpr) String() string {
+func (x *DropFlowExpr) String() string {
 	return protoimpl.X.MessageStringOf(x)
 }
 
-func (*DropFlowTaskExpr) ProtoMessage() {}
+func (*DropFlowExpr) ProtoMessage() {}
 
-func (x *DropFlowTaskExpr) ProtoReflect() protoreflect.Message {
+func (x *DropFlowExpr) ProtoReflect() protoreflect.Message {
 	mi := &file_greptime_v1_ddl_proto_msgTypes[2]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
@@ -392,21 +392,21 @@ func (x *DropFlowTaskExpr) ProtoReflect() protoreflect.Message {
 	return mi.MessageOf(x)
 }
 
-// Deprecated: Use DropFlowTaskExpr.ProtoReflect.Descriptor instead.
-func (*DropFlowTaskExpr) Descriptor() ([]byte, []int) {
+// Deprecated: Use DropFlowExpr.ProtoReflect.Descriptor instead.
+func (*DropFlowExpr) Descriptor() ([]byte, []int) {
 	return file_greptime_v1_ddl_proto_rawDescGZIP(), []int{2}
 }
 
-func (x *DropFlowTaskExpr) GetCatalogName() string {
+func (x *DropFlowExpr) GetCatalogName() string {
 	if x != nil {
 		return x.CatalogName
 	}
 	return ""
 }
 
-func (x *DropFlowTaskExpr) GetTaskName() string {
+func (x *DropFlowExpr) GetFlowName() string {
 	if x != nil {
-		return x.TaskName
+		return x.FlowName
 	}
 	return ""
 }
@@ -1512,7 +1512,7 @@ var file_greptime_v1_ddl_proto_rawDesc = []byte{
 	0x0a, 0x15, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76, 0x31, 0x2f, 0x64, 0x64,
 	0x6c, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0b, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d,
 	0x65, 0x2e, 0x76, 0x31, 0x1a, 0x18, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2f, 0x76,
-	0x31, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xed,
+	0x31, 0x2f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0xd3,
 	0x03, 0x0a, 0x0a, 0x44, 0x64, 0x6c, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x4a, 0x0a,
 	0x0f, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x5f, 0x64, 0x61, 0x74, 0x61, 0x62, 0x61, 0x73, 0x65,
 	0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x1f, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d,
@@ -1534,243 +1534,240 @@ var file_greptime_v1_ddl_proto_rawDesc = []byte{
 	0x0b, 0x32, 0x1e, 0x2e, 0x67, 0x72, 0x65, 0x70, 0x74, 0x69, 0x6d, 0x65, 0x2e, 0x76, 0x31, 0x2e,
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 var (
@@ -1790,8 +1787,8 @@ var file_greptime_v1_ddl_proto_msgTypes = make([]protoimpl.MessageInfo, 22)
 var file_greptime_v1_ddl_proto_goTypes = []interface{}{
 	(AddColumnLocation_LocationType)(0), // 0: greptime.v1.AddColumnLocation.LocationType
 	(*DdlRequest)(nil),                  // 1: greptime.v1.DdlRequest
-	(*CreateFlowTaskExpr)(nil),          // 2: greptime.v1.CreateFlowTaskExpr
-	(*DropFlowTaskExpr)(nil),            // 3: greptime.v1.DropFlowTaskExpr
+	(*CreateFlowExpr)(nil),              // 2: greptime.v1.CreateFlowExpr
+	(*DropFlowExpr)(nil),                // 3: greptime.v1.DropFlowExpr
 	(*CreateTableExpr)(nil),             // 4: greptime.v1.CreateTableExpr
 	(*AlterExpr)(nil),                   // 5: greptime.v1.AlterExpr
 	(*DropTableExpr)(nil),               // 6: greptime.v1.DropTableExpr
@@ -1808,7 +1805,7 @@ var file_greptime_v1_ddl_proto_goTypes = []interface{}{
 	(*TableId)(nil),                     // 17: greptime.v1.TableId
 	(*ColumnDef)(nil),                   // 18: greptime.v1.ColumnDef
 	(*AddColumnLocation)(nil),           // 19: greptime.v1.AddColumnLocation
-	nil,                                 // 20: greptime.v1.CreateFlowTaskExpr.TaskOptionsEntry
+	nil,                                 // 20: greptime.v1.CreateFlowExpr.FlowOptionsEntry
 	nil,                                 // 21: greptime.v1.CreateTableExpr.TableOptionsEntry
 	nil,                                 // 22: greptime.v1.CreateDatabaseExpr.OptionsEntry
 	(*TableName)(nil),                   // 23: greptime.v1.TableName
@@ -1822,11 +1819,11 @@ var file_greptime_v1_ddl_proto_depIdxs = []int32{
 	5,  // 2: greptime.v1.DdlRequest.alter:type_name -> greptime.v1.AlterExpr
 	6,  // 3: greptime.v1.DdlRequest.drop_table:type_name -> greptime.v1.DropTableExpr
 	8,  // 4: greptime.v1.DdlRequest.truncate_table:type_name -> greptime.v1.TruncateTableExpr
-	2,  // 5: greptime.v1.DdlRequest.create_flow_task:type_name -> greptime.v1.CreateFlowTaskExpr
-	3,  // 6: greptime.v1.DdlRequest.drop_flow_task:type_name -> greptime.v1.DropFlowTaskExpr
-	23, // 7: greptime.v1.CreateFlowTaskExpr.source_table_names:type_name -> greptime.v1.TableName
-	23, // 8: greptime.v1.CreateFlowTaskExpr.sink_table_name:type_name -> greptime.v1.TableName
-	20, // 9: greptime.v1.CreateFlowTaskExpr.task_options:type_name -> greptime.v1.CreateFlowTaskExpr.TaskOptionsEntry
+	2,  // 5: greptime.v1.DdlRequest.create_flow:type_name -> greptime.v1.CreateFlowExpr
+	3,  // 6: greptime.v1.DdlRequest.drop_flow:type_name -> greptime.v1.DropFlowExpr
+	23, // 7: greptime.v1.CreateFlowExpr.source_table_names:type_name -> greptime.v1.TableName
+	23, // 8: greptime.v1.CreateFlowExpr.sink_table_name:type_name -> greptime.v1.TableName
+	20, // 9: greptime.v1.CreateFlowExpr.flow_options:type_name -> greptime.v1.CreateFlowExpr.FlowOptionsEntry
 	18, // 10: greptime.v1.CreateTableExpr.column_defs:type_name -> greptime.v1.ColumnDef
 	21, // 11: greptime.v1.CreateTableExpr.table_options:type_name -> greptime.v1.CreateTableExpr.TableOptionsEntry
 	17, // 12: greptime.v1.CreateTableExpr.table_id:type_name -> greptime.v1.TableId
@@ -1875,7 +1872,7 @@ func file_greptime_v1_ddl_proto_init() {
 			}
 		}
 		file_greptime_v1_ddl_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateFlowTaskExpr); i {
+			switch v := v.(*CreateFlowExpr); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -1887,7 +1884,7 @@ func file_greptime_v1_ddl_proto_init() {
 			}
 		}
 		file_greptime_v1_ddl_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DropFlowTaskExpr); i {
+			switch v := v.(*DropFlowExpr); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2097,8 +2094,8 @@ func file_greptime_v1_ddl_proto_init() {
 		(*DdlRequest_Alter)(nil),
 		(*DdlRequest_DropTable)(nil),
 		(*DdlRequest_TruncateTable)(nil),
-		(*DdlRequest_CreateFlowTask)(nil),
-		(*DdlRequest_DropFlowTask)(nil),
+		(*DdlRequest_CreateFlow)(nil),
+		(*DdlRequest_DropFlow)(nil),
 	}
 	file_greptime_v1_ddl_proto_msgTypes[4].OneofWrappers = []interface{}{
 		(*AlterExpr_AddColumns)(nil),
diff --git a/go/greptime/v1/meta/ddl.pb.go b/go/greptime/v1/meta/ddl.pb.go
index 89c67a18..669e0232 100644
--- a/go/greptime/v1/meta/ddl.pb.go
+++ b/go/greptime/v1/meta/ddl.pb.go
@@ -525,7 +525,7 @@ type CreateFlowTask struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	CreateFlowTask *v1.CreateFlowTaskExpr `protobuf:"bytes,1,opt,name=create_flow_task,json=createFlowTask,proto3" json:"create_flow_task,omitempty"`
+	CreateFlow *v1.CreateFlowExpr `protobuf:"bytes,1,opt,name=create_flow,json=createFlow,proto3" json:"create_flow,omitempty"`
 }
 
 func (x *CreateFlowTask) Reset() {
@@ -560,9 +560,9 @@ func (*CreateFlowTask) Descriptor() ([]byte, []int) {
 	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{9}
 }
 
-func (x *CreateFlowTask) GetCreateFlowTask() *v1.CreateFlowTaskExpr {
+func (x *CreateFlowTask) GetCreateFlow() *v1.CreateFlowExpr {
 	if x != nil {
-		return x.CreateFlowTask
+		return x.CreateFlow
 	}
 	return nil
 }
@@ -572,7 +572,7 @@ type DropFlowTask struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	DropFlowTask *v1.DropFlowTaskExpr `protobuf:"bytes,1,opt,name=drop_flow_task,json=dropFlowTask,proto3" json:"drop_flow_task,omitempty"`
+	DropFlow *v1.DropFlowExpr `protobuf:"bytes,1,opt,name=drop_flow,json=dropFlow,proto3" json:"drop_flow,omitempty"`
 }
 
 func (x *DropFlowTask) Reset() {
@@ -607,9 +607,9 @@ func (*DropFlowTask) Descriptor() ([]byte, []int) {
 	return file_greptime_v1_meta_ddl_proto_rawDescGZIP(), []int{10}
 }
 
-func (x *DropFlowTask) GetDropFlowTask() *v1.DropFlowTaskExpr {
+func (x *DropFlowTask) GetDropFlow() *v1.DropFlowExpr {
 	if x != nil {
-		return x.DropFlowTask
+		return x.DropFlow
 	}
 	return nil
 }
@@ -966,100 +966,98 @@ var file_greptime_v1_meta_ddl_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1098,8 +1096,8 @@ var file_greptime_v1_meta_ddl_proto_goTypes = []interface{}{
 	(*v1.AlterExpr)(nil),          // 18: greptime.v1.AlterExpr
 	(*v1.TruncateTableExpr)(nil),  // 19: greptime.v1.TruncateTableExpr
 	(*v1.DropDatabaseExpr)(nil),   // 20: greptime.v1.DropDatabaseExpr
-	(*v1.CreateFlowTaskExpr)(nil), // 21: greptime.v1.CreateFlowTaskExpr
-	(*v1.DropFlowTaskExpr)(nil),   // 22: greptime.v1.DropFlowTaskExpr
+	(*v1.CreateFlowExpr)(nil),     // 21: greptime.v1.CreateFlowExpr
+	(*v1.DropFlowExpr)(nil),       // 22: greptime.v1.DropFlowExpr
 	(*RequestHeader)(nil),         // 23: greptime.v1.meta.RequestHeader
 	(*ResponseHeader)(nil),        // 24: greptime.v1.meta.ResponseHeader
 	(*ProcedureId)(nil),           // 25: greptime.v1.meta.ProcedureId
@@ -1116,8 +1114,8 @@ var file_greptime_v1_meta_ddl_proto_depIdxs = []int32{
 	6,  // 7: greptime.v1.meta.AlterTableTasks.tasks:type_name -> greptime.v1.meta.AlterTableTask
 	19, // 8: greptime.v1.meta.TruncateTableTask.truncate_table:type_name -> greptime.v1.TruncateTableExpr
 	20, // 9: greptime.v1.meta.DropDatabaseTask.drop_database:type_name -> greptime.v1.DropDatabaseExpr
-	21, // 10: greptime.v1.meta.CreateFlowTask.create_flow_task:type_name -> greptime.v1.CreateFlowTaskExpr
-	22, // 11: greptime.v1.meta.DropFlowTask.drop_flow_task:type_name -> greptime.v1.DropFlowTaskExpr
+	21, // 10: greptime.v1.meta.CreateFlowTask.create_flow:type_name -> greptime.v1.CreateFlowExpr
+	22, // 11: greptime.v1.meta.DropFlowTask.drop_flow:type_name -> greptime.v1.DropFlowExpr
 	23, // 12: greptime.v1.meta.DdlTaskRequest.header:type_name -> greptime.v1.meta.RequestHeader
 	2,  // 13: greptime.v1.meta.DdlTaskRequest.create_table_task:type_name -> greptime.v1.meta.CreateTableTask
 	4,  // 14: greptime.v1.meta.DdlTaskRequest.drop_table_task:type_name -> greptime.v1.meta.DropTableTask
diff --git a/java/src/main/java/greptime/v1/meta/Ddl.java b/java/src/main/java/greptime/v1/meta/Ddl.java
index 62664925..e8573e8c 100644
--- a/java/src/main/java/greptime/v1/meta/Ddl.java
+++ b/java/src/main/java/greptime/v1/meta/Ddl.java
@@ -6699,19 +6699,19 @@ public interface CreateFlowTaskOrBuilder extends
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
-     * @return Whether the createFlowTask field is set.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
+     * @return Whether the createFlow field is set.
      */
-    boolean hasCreateFlowTask();
+    boolean hasCreateFlow();
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
-     * @return The createFlowTask.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
+     * @return The createFlow.
      */
-    io.greptime.v1.Ddl.CreateFlowTaskExpr getCreateFlowTask();
+    io.greptime.v1.Ddl.CreateFlowExpr getCreateFlow();
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
      */
-    io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder getCreateFlowTaskOrBuilder();
+    io.greptime.v1.Ddl.CreateFlowExprOrBuilder getCreateFlowOrBuilder();
   }
   /**
    * Protobuf type {@code greptime.v1.meta.CreateFlowTask}
@@ -6759,14 +6759,14 @@ private CreateFlowTask(
               done = true;
               break;
             case 10: {
-              io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder subBuilder = null;
-              if (createFlowTask_ != null) {
-                subBuilder = createFlowTask_.toBuilder();
+              io.greptime.v1.Ddl.CreateFlowExpr.Builder subBuilder = null;
+              if (createFlow_ != null) {
+                subBuilder = createFlow_.toBuilder();
               }
-              createFlowTask_ = input.readMessage(io.greptime.v1.Ddl.CreateFlowTaskExpr.parser(), extensionRegistry);
+              createFlow_ = input.readMessage(io.greptime.v1.Ddl.CreateFlowExpr.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom(createFlowTask_);
-                createFlowTask_ = subBuilder.buildPartial();
+                subBuilder.mergeFrom(createFlow_);
+                createFlow_ = subBuilder.buildPartial();
               }
 
               break;
@@ -6805,30 +6805,30 @@ private CreateFlowTask(
               greptime.v1.meta.Ddl.CreateFlowTask.class, greptime.v1.meta.Ddl.CreateFlowTask.Builder.class);
     }
 
-    public static final int CREATE_FLOW_TASK_FIELD_NUMBER = 1;
-    private io.greptime.v1.Ddl.CreateFlowTaskExpr createFlowTask_;
+    public static final int CREATE_FLOW_FIELD_NUMBER = 1;
+    private io.greptime.v1.Ddl.CreateFlowExpr createFlow_;
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
-     * @return Whether the createFlowTask field is set.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
+     * @return Whether the createFlow field is set.
      */
     @java.lang.Override
-    public boolean hasCreateFlowTask() {
-      return createFlowTask_ != null;
+    public boolean hasCreateFlow() {
+      return createFlow_ != null;
     }
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
-     * @return The createFlowTask.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
+     * @return The createFlow.
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.CreateFlowTaskExpr getCreateFlowTask() {
-      return createFlowTask_ == null ? io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance() : createFlowTask_;
+    public io.greptime.v1.Ddl.CreateFlowExpr getCreateFlow() {
+      return createFlow_ == null ? io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance() : createFlow_;
     }
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder getCreateFlowTaskOrBuilder() {
-      return getCreateFlowTask();
+    public io.greptime.v1.Ddl.CreateFlowExprOrBuilder getCreateFlowOrBuilder() {
+      return getCreateFlow();
     }
 
     private byte memoizedIsInitialized = -1;
@@ -6845,8 +6845,8 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      if (createFlowTask_ != null) {
-        output.writeMessage(1, getCreateFlowTask());
+      if (createFlow_ != null) {
+        output.writeMessage(1, getCreateFlow());
       }
       unknownFields.writeTo(output);
     }
@@ -6857,9 +6857,9 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (createFlowTask_ != null) {
+      if (createFlow_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getCreateFlowTask());
+          .computeMessageSize(1, getCreateFlow());
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -6876,10 +6876,10 @@ public boolean equals(final java.lang.Object obj) {
       }
       greptime.v1.meta.Ddl.CreateFlowTask other = (greptime.v1.meta.Ddl.CreateFlowTask) obj;
 
-      if (hasCreateFlowTask() != other.hasCreateFlowTask()) return false;
-      if (hasCreateFlowTask()) {
-        if (!getCreateFlowTask()
-            .equals(other.getCreateFlowTask())) return false;
+      if (hasCreateFlow() != other.hasCreateFlow()) return false;
+      if (hasCreateFlow()) {
+        if (!getCreateFlow()
+            .equals(other.getCreateFlow())) return false;
       }
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
@@ -6892,9 +6892,9 @@ public int hashCode() {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasCreateFlowTask()) {
-        hash = (37 * hash) + CREATE_FLOW_TASK_FIELD_NUMBER;
-        hash = (53 * hash) + getCreateFlowTask().hashCode();
+      if (hasCreateFlow()) {
+        hash = (37 * hash) + CREATE_FLOW_FIELD_NUMBER;
+        hash = (53 * hash) + getCreateFlow().hashCode();
       }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
@@ -7029,11 +7029,11 @@ private void maybeForceBuilderInitialization() {
       @java.lang.Override
       public Builder clear() {
         super.clear();
-        if (createFlowTaskBuilder_ == null) {
-          createFlowTask_ = null;
+        if (createFlowBuilder_ == null) {
+          createFlow_ = null;
         } else {
-          createFlowTask_ = null;
-          createFlowTaskBuilder_ = null;
+          createFlow_ = null;
+          createFlowBuilder_ = null;
         }
         return this;
       }
@@ -7061,10 +7061,10 @@ public greptime.v1.meta.Ddl.CreateFlowTask build() {
       @java.lang.Override
       public greptime.v1.meta.Ddl.CreateFlowTask buildPartial() {
         greptime.v1.meta.Ddl.CreateFlowTask result = new greptime.v1.meta.Ddl.CreateFlowTask(this);
-        if (createFlowTaskBuilder_ == null) {
-          result.createFlowTask_ = createFlowTask_;
+        if (createFlowBuilder_ == null) {
+          result.createFlow_ = createFlow_;
         } else {
-          result.createFlowTask_ = createFlowTaskBuilder_.build();
+          result.createFlow_ = createFlowBuilder_.build();
         }
         onBuilt();
         return result;
@@ -7114,8 +7114,8 @@ public Builder mergeFrom(com.google.protobuf.Message other) {
 
       public Builder mergeFrom(greptime.v1.meta.Ddl.CreateFlowTask other) {
         if (other == greptime.v1.meta.Ddl.CreateFlowTask.getDefaultInstance()) return this;
-        if (other.hasCreateFlowTask()) {
-          mergeCreateFlowTask(other.getCreateFlowTask());
+        if (other.hasCreateFlow()) {
+          mergeCreateFlow(other.getCreateFlow());
         }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
@@ -7146,123 +7146,123 @@ public Builder mergeFrom(
         return this;
       }
 
-      private io.greptime.v1.Ddl.CreateFlowTaskExpr createFlowTask_;
+      private io.greptime.v1.Ddl.CreateFlowExpr createFlow_;
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.CreateFlowTaskExpr, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder, io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder> createFlowTaskBuilder_;
+          io.greptime.v1.Ddl.CreateFlowExpr, io.greptime.v1.Ddl.CreateFlowExpr.Builder, io.greptime.v1.Ddl.CreateFlowExprOrBuilder> createFlowBuilder_;
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
-       * @return Whether the createFlowTask field is set.
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
+       * @return Whether the createFlow field is set.
        */
-      public boolean hasCreateFlowTask() {
-        return createFlowTaskBuilder_ != null || createFlowTask_ != null;
+      public boolean hasCreateFlow() {
+        return createFlowBuilder_ != null || createFlow_ != null;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
-       * @return The createFlowTask.
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
+       * @return The createFlow.
        */
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr getCreateFlowTask() {
-        if (createFlowTaskBuilder_ == null) {
-          return createFlowTask_ == null ? io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance() : createFlowTask_;
+      public io.greptime.v1.Ddl.CreateFlowExpr getCreateFlow() {
+        if (createFlowBuilder_ == null) {
+          return createFlow_ == null ? io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance() : createFlow_;
         } else {
-          return createFlowTaskBuilder_.getMessage();
+          return createFlowBuilder_.getMessage();
         }
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
-      public Builder setCreateFlowTask(io.greptime.v1.Ddl.CreateFlowTaskExpr value) {
-        if (createFlowTaskBuilder_ == null) {
+      public Builder setCreateFlow(io.greptime.v1.Ddl.CreateFlowExpr value) {
+        if (createFlowBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
-          createFlowTask_ = value;
+          createFlow_ = value;
           onChanged();
         } else {
-          createFlowTaskBuilder_.setMessage(value);
+          createFlowBuilder_.setMessage(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
-      public Builder setCreateFlowTask(
-          io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder builderForValue) {
-        if (createFlowTaskBuilder_ == null) {
-          createFlowTask_ = builderForValue.build();
+      public Builder setCreateFlow(
+          io.greptime.v1.Ddl.CreateFlowExpr.Builder builderForValue) {
+        if (createFlowBuilder_ == null) {
+          createFlow_ = builderForValue.build();
           onChanged();
         } else {
-          createFlowTaskBuilder_.setMessage(builderForValue.build());
+          createFlowBuilder_.setMessage(builderForValue.build());
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
-      public Builder mergeCreateFlowTask(io.greptime.v1.Ddl.CreateFlowTaskExpr value) {
-        if (createFlowTaskBuilder_ == null) {
-          if (createFlowTask_ != null) {
-            createFlowTask_ =
-              io.greptime.v1.Ddl.CreateFlowTaskExpr.newBuilder(createFlowTask_).mergeFrom(value).buildPartial();
+      public Builder mergeCreateFlow(io.greptime.v1.Ddl.CreateFlowExpr value) {
+        if (createFlowBuilder_ == null) {
+          if (createFlow_ != null) {
+            createFlow_ =
+              io.greptime.v1.Ddl.CreateFlowExpr.newBuilder(createFlow_).mergeFrom(value).buildPartial();
           } else {
-            createFlowTask_ = value;
+            createFlow_ = value;
           }
           onChanged();
         } else {
-          createFlowTaskBuilder_.mergeFrom(value);
+          createFlowBuilder_.mergeFrom(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
-      public Builder clearCreateFlowTask() {
-        if (createFlowTaskBuilder_ == null) {
-          createFlowTask_ = null;
+      public Builder clearCreateFlow() {
+        if (createFlowBuilder_ == null) {
+          createFlow_ = null;
           onChanged();
         } else {
-          createFlowTask_ = null;
-          createFlowTaskBuilder_ = null;
+          createFlow_ = null;
+          createFlowBuilder_ = null;
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder getCreateFlowTaskBuilder() {
+      public io.greptime.v1.Ddl.CreateFlowExpr.Builder getCreateFlowBuilder() {
         
         onChanged();
-        return getCreateFlowTaskFieldBuilder().getBuilder();
+        return getCreateFlowFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
-      public io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder getCreateFlowTaskOrBuilder() {
-        if (createFlowTaskBuilder_ != null) {
-          return createFlowTaskBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.Ddl.CreateFlowExprOrBuilder getCreateFlowOrBuilder() {
+        if (createFlowBuilder_ != null) {
+          return createFlowBuilder_.getMessageOrBuilder();
         } else {
-          return createFlowTask_ == null ?
-              io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance() : createFlowTask_;
+          return createFlow_ == null ?
+              io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance() : createFlow_;
         }
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 1;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 1;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.CreateFlowTaskExpr, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder, io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder> 
-          getCreateFlowTaskFieldBuilder() {
-        if (createFlowTaskBuilder_ == null) {
-          createFlowTaskBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.Ddl.CreateFlowTaskExpr, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder, io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder>(
-                  getCreateFlowTask(),
+          io.greptime.v1.Ddl.CreateFlowExpr, io.greptime.v1.Ddl.CreateFlowExpr.Builder, io.greptime.v1.Ddl.CreateFlowExprOrBuilder> 
+          getCreateFlowFieldBuilder() {
+        if (createFlowBuilder_ == null) {
+          createFlowBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.Ddl.CreateFlowExpr, io.greptime.v1.Ddl.CreateFlowExpr.Builder, io.greptime.v1.Ddl.CreateFlowExprOrBuilder>(
+                  getCreateFlow(),
                   getParentForChildren(),
                   isClean());
-          createFlowTask_ = null;
+          createFlow_ = null;
         }
-        return createFlowTaskBuilder_;
+        return createFlowBuilder_;
       }
       @java.lang.Override
       public final Builder setUnknownFields(
@@ -7322,19 +7322,19 @@ public interface DropFlowTaskOrBuilder extends
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
-     * @return Whether the dropFlowTask field is set.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
+     * @return Whether the dropFlow field is set.
      */
-    boolean hasDropFlowTask();
+    boolean hasDropFlow();
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
-     * @return The dropFlowTask.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
+     * @return The dropFlow.
      */
-    io.greptime.v1.Ddl.DropFlowTaskExpr getDropFlowTask();
+    io.greptime.v1.Ddl.DropFlowExpr getDropFlow();
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
      */
-    io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder getDropFlowTaskOrBuilder();
+    io.greptime.v1.Ddl.DropFlowExprOrBuilder getDropFlowOrBuilder();
   }
   /**
    * Protobuf type {@code greptime.v1.meta.DropFlowTask}
@@ -7382,14 +7382,14 @@ private DropFlowTask(
               done = true;
               break;
             case 10: {
-              io.greptime.v1.Ddl.DropFlowTaskExpr.Builder subBuilder = null;
-              if (dropFlowTask_ != null) {
-                subBuilder = dropFlowTask_.toBuilder();
+              io.greptime.v1.Ddl.DropFlowExpr.Builder subBuilder = null;
+              if (dropFlow_ != null) {
+                subBuilder = dropFlow_.toBuilder();
               }
-              dropFlowTask_ = input.readMessage(io.greptime.v1.Ddl.DropFlowTaskExpr.parser(), extensionRegistry);
+              dropFlow_ = input.readMessage(io.greptime.v1.Ddl.DropFlowExpr.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom(dropFlowTask_);
-                dropFlowTask_ = subBuilder.buildPartial();
+                subBuilder.mergeFrom(dropFlow_);
+                dropFlow_ = subBuilder.buildPartial();
               }
 
               break;
@@ -7428,30 +7428,30 @@ private DropFlowTask(
               greptime.v1.meta.Ddl.DropFlowTask.class, greptime.v1.meta.Ddl.DropFlowTask.Builder.class);
     }
 
-    public static final int DROP_FLOW_TASK_FIELD_NUMBER = 1;
-    private io.greptime.v1.Ddl.DropFlowTaskExpr dropFlowTask_;
+    public static final int DROP_FLOW_FIELD_NUMBER = 1;
+    private io.greptime.v1.Ddl.DropFlowExpr dropFlow_;
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
-     * @return Whether the dropFlowTask field is set.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
+     * @return Whether the dropFlow field is set.
      */
     @java.lang.Override
-    public boolean hasDropFlowTask() {
-      return dropFlowTask_ != null;
+    public boolean hasDropFlow() {
+      return dropFlow_ != null;
     }
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
-     * @return The dropFlowTask.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
+     * @return The dropFlow.
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.DropFlowTaskExpr getDropFlowTask() {
-      return dropFlowTask_ == null ? io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance() : dropFlowTask_;
+    public io.greptime.v1.Ddl.DropFlowExpr getDropFlow() {
+      return dropFlow_ == null ? io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance() : dropFlow_;
     }
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder getDropFlowTaskOrBuilder() {
-      return getDropFlowTask();
+    public io.greptime.v1.Ddl.DropFlowExprOrBuilder getDropFlowOrBuilder() {
+      return getDropFlow();
     }
 
     private byte memoizedIsInitialized = -1;
@@ -7468,8 +7468,8 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      if (dropFlowTask_ != null) {
-        output.writeMessage(1, getDropFlowTask());
+      if (dropFlow_ != null) {
+        output.writeMessage(1, getDropFlow());
       }
       unknownFields.writeTo(output);
     }
@@ -7480,9 +7480,9 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (dropFlowTask_ != null) {
+      if (dropFlow_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getDropFlowTask());
+          .computeMessageSize(1, getDropFlow());
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -7499,10 +7499,10 @@ public boolean equals(final java.lang.Object obj) {
       }
       greptime.v1.meta.Ddl.DropFlowTask other = (greptime.v1.meta.Ddl.DropFlowTask) obj;
 
-      if (hasDropFlowTask() != other.hasDropFlowTask()) return false;
-      if (hasDropFlowTask()) {
-        if (!getDropFlowTask()
-            .equals(other.getDropFlowTask())) return false;
+      if (hasDropFlow() != other.hasDropFlow()) return false;
+      if (hasDropFlow()) {
+        if (!getDropFlow()
+            .equals(other.getDropFlow())) return false;
       }
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
@@ -7515,9 +7515,9 @@ public int hashCode() {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasDropFlowTask()) {
-        hash = (37 * hash) + DROP_FLOW_TASK_FIELD_NUMBER;
-        hash = (53 * hash) + getDropFlowTask().hashCode();
+      if (hasDropFlow()) {
+        hash = (37 * hash) + DROP_FLOW_FIELD_NUMBER;
+        hash = (53 * hash) + getDropFlow().hashCode();
       }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
@@ -7652,11 +7652,11 @@ private void maybeForceBuilderInitialization() {
       @java.lang.Override
       public Builder clear() {
         super.clear();
-        if (dropFlowTaskBuilder_ == null) {
-          dropFlowTask_ = null;
+        if (dropFlowBuilder_ == null) {
+          dropFlow_ = null;
         } else {
-          dropFlowTask_ = null;
-          dropFlowTaskBuilder_ = null;
+          dropFlow_ = null;
+          dropFlowBuilder_ = null;
         }
         return this;
       }
@@ -7684,10 +7684,10 @@ public greptime.v1.meta.Ddl.DropFlowTask build() {
       @java.lang.Override
       public greptime.v1.meta.Ddl.DropFlowTask buildPartial() {
         greptime.v1.meta.Ddl.DropFlowTask result = new greptime.v1.meta.Ddl.DropFlowTask(this);
-        if (dropFlowTaskBuilder_ == null) {
-          result.dropFlowTask_ = dropFlowTask_;
+        if (dropFlowBuilder_ == null) {
+          result.dropFlow_ = dropFlow_;
         } else {
-          result.dropFlowTask_ = dropFlowTaskBuilder_.build();
+          result.dropFlow_ = dropFlowBuilder_.build();
         }
         onBuilt();
         return result;
@@ -7737,8 +7737,8 @@ public Builder mergeFrom(com.google.protobuf.Message other) {
 
       public Builder mergeFrom(greptime.v1.meta.Ddl.DropFlowTask other) {
         if (other == greptime.v1.meta.Ddl.DropFlowTask.getDefaultInstance()) return this;
-        if (other.hasDropFlowTask()) {
-          mergeDropFlowTask(other.getDropFlowTask());
+        if (other.hasDropFlow()) {
+          mergeDropFlow(other.getDropFlow());
         }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
@@ -7769,123 +7769,123 @@ public Builder mergeFrom(
         return this;
       }
 
-      private io.greptime.v1.Ddl.DropFlowTaskExpr dropFlowTask_;
+      private io.greptime.v1.Ddl.DropFlowExpr dropFlow_;
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.DropFlowTaskExpr, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder, io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder> dropFlowTaskBuilder_;
+          io.greptime.v1.Ddl.DropFlowExpr, io.greptime.v1.Ddl.DropFlowExpr.Builder, io.greptime.v1.Ddl.DropFlowExprOrBuilder> dropFlowBuilder_;
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
-       * @return Whether the dropFlowTask field is set.
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
+       * @return Whether the dropFlow field is set.
        */
-      public boolean hasDropFlowTask() {
-        return dropFlowTaskBuilder_ != null || dropFlowTask_ != null;
+      public boolean hasDropFlow() {
+        return dropFlowBuilder_ != null || dropFlow_ != null;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
-       * @return The dropFlowTask.
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
+       * @return The dropFlow.
        */
-      public io.greptime.v1.Ddl.DropFlowTaskExpr getDropFlowTask() {
-        if (dropFlowTaskBuilder_ == null) {
-          return dropFlowTask_ == null ? io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance() : dropFlowTask_;
+      public io.greptime.v1.Ddl.DropFlowExpr getDropFlow() {
+        if (dropFlowBuilder_ == null) {
+          return dropFlow_ == null ? io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance() : dropFlow_;
         } else {
-          return dropFlowTaskBuilder_.getMessage();
+          return dropFlowBuilder_.getMessage();
         }
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
-      public Builder setDropFlowTask(io.greptime.v1.Ddl.DropFlowTaskExpr value) {
-        if (dropFlowTaskBuilder_ == null) {
+      public Builder setDropFlow(io.greptime.v1.Ddl.DropFlowExpr value) {
+        if (dropFlowBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
-          dropFlowTask_ = value;
+          dropFlow_ = value;
           onChanged();
         } else {
-          dropFlowTaskBuilder_.setMessage(value);
+          dropFlowBuilder_.setMessage(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
-      public Builder setDropFlowTask(
-          io.greptime.v1.Ddl.DropFlowTaskExpr.Builder builderForValue) {
-        if (dropFlowTaskBuilder_ == null) {
-          dropFlowTask_ = builderForValue.build();
+      public Builder setDropFlow(
+          io.greptime.v1.Ddl.DropFlowExpr.Builder builderForValue) {
+        if (dropFlowBuilder_ == null) {
+          dropFlow_ = builderForValue.build();
           onChanged();
         } else {
-          dropFlowTaskBuilder_.setMessage(builderForValue.build());
+          dropFlowBuilder_.setMessage(builderForValue.build());
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
-      public Builder mergeDropFlowTask(io.greptime.v1.Ddl.DropFlowTaskExpr value) {
-        if (dropFlowTaskBuilder_ == null) {
-          if (dropFlowTask_ != null) {
-            dropFlowTask_ =
-              io.greptime.v1.Ddl.DropFlowTaskExpr.newBuilder(dropFlowTask_).mergeFrom(value).buildPartial();
+      public Builder mergeDropFlow(io.greptime.v1.Ddl.DropFlowExpr value) {
+        if (dropFlowBuilder_ == null) {
+          if (dropFlow_ != null) {
+            dropFlow_ =
+              io.greptime.v1.Ddl.DropFlowExpr.newBuilder(dropFlow_).mergeFrom(value).buildPartial();
           } else {
-            dropFlowTask_ = value;
+            dropFlow_ = value;
           }
           onChanged();
         } else {
-          dropFlowTaskBuilder_.mergeFrom(value);
+          dropFlowBuilder_.mergeFrom(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
-      public Builder clearDropFlowTask() {
-        if (dropFlowTaskBuilder_ == null) {
-          dropFlowTask_ = null;
+      public Builder clearDropFlow() {
+        if (dropFlowBuilder_ == null) {
+          dropFlow_ = null;
           onChanged();
         } else {
-          dropFlowTask_ = null;
-          dropFlowTaskBuilder_ = null;
+          dropFlow_ = null;
+          dropFlowBuilder_ = null;
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
-      public io.greptime.v1.Ddl.DropFlowTaskExpr.Builder getDropFlowTaskBuilder() {
+      public io.greptime.v1.Ddl.DropFlowExpr.Builder getDropFlowBuilder() {
         
         onChanged();
-        return getDropFlowTaskFieldBuilder().getBuilder();
+        return getDropFlowFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
-      public io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder getDropFlowTaskOrBuilder() {
-        if (dropFlowTaskBuilder_ != null) {
-          return dropFlowTaskBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.Ddl.DropFlowExprOrBuilder getDropFlowOrBuilder() {
+        if (dropFlowBuilder_ != null) {
+          return dropFlowBuilder_.getMessageOrBuilder();
         } else {
-          return dropFlowTask_ == null ?
-              io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance() : dropFlowTask_;
+          return dropFlow_ == null ?
+              io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance() : dropFlow_;
         }
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 1;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 1;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.DropFlowTaskExpr, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder, io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder> 
-          getDropFlowTaskFieldBuilder() {
-        if (dropFlowTaskBuilder_ == null) {
-          dropFlowTaskBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.Ddl.DropFlowTaskExpr, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder, io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder>(
-                  getDropFlowTask(),
+          io.greptime.v1.Ddl.DropFlowExpr, io.greptime.v1.Ddl.DropFlowExpr.Builder, io.greptime.v1.Ddl.DropFlowExprOrBuilder> 
+          getDropFlowFieldBuilder() {
+        if (dropFlowBuilder_ == null) {
+          dropFlowBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.Ddl.DropFlowExpr, io.greptime.v1.Ddl.DropFlowExpr.Builder, io.greptime.v1.Ddl.DropFlowExprOrBuilder>(
+                  getDropFlow(),
                   getParentForChildren(),
                   isClean());
-          dropFlowTask_ = null;
+          dropFlow_ = null;
         }
-        return dropFlowTaskBuilder_;
+        return dropFlowBuilder_;
       }
       @java.lang.Override
       public final Builder setUnknownFields(
@@ -12849,38 +12849,38 @@ public greptime.v1.meta.Ddl.DdlTaskResponse getDefaultInstanceForType() {
       "ask\"K\n\021TruncateTableTask\0226\n\016truncate_tab" +
       "le\030\001 \001(\0132\036.greptime.v1.TruncateTableExpr" +
       "\"H\n\020DropDatabaseTask\0224\n\rdrop_database\030\001 " +
-      "\001(\0132\035.greptime.v1.DropDatabaseExpr\"K\n\016Cr" +
-      "eateFlowTask\0229\n\020create_flow_task\030\001 \001(\0132\037" +
-      ".greptime.v1.CreateFlowTaskExpr\"E\n\014DropF" +
-      "lowTask\0225\n\016drop_flow_task\030\001 \001(\0132\035.grepti" +
-      "me.v1.DropFlowTaskExpr\"\207\006\n\016DdlTaskReques" +
-      "t\022/\n\006header\030\001 \001(\0132\037.greptime.v1.meta.Req" +
-      "uestHeader\022>\n\021create_table_task\030\002 \001(\0132!." +
-      "greptime.v1.meta.CreateTableTaskH\000\022:\n\017dr" +
-      "op_table_task\030\003 \001(\0132\037.greptime.v1.meta.D" +
-      "ropTableTaskH\000\022<\n\020alter_table_task\030\004 \001(\013" +
-      "2 .greptime.v1.meta.AlterTableTaskH\000\022B\n\023" +
-      "truncate_table_task\030\005 \001(\0132#.greptime.v1." +
-      "meta.TruncateTableTaskH\000\022@\n\022create_table" +
-      "_tasks\030\006 \001(\0132\".greptime.v1.meta.CreateTa" +
-      "bleTasksH\000\022<\n\020drop_table_tasks\030\007 \001(\0132 .g" +
-      "reptime.v1.meta.DropTableTasksH\000\022>\n\021alte" +
-      "r_table_tasks\030\010 \001(\0132!.greptime.v1.meta.A" +
-      "lterTableTasksH\000\022@\n\022drop_database_task\030\t" +
-      " \001(\0132\".greptime.v1.meta.DropDatabaseTask" +
-      "H\000\022D\n\024create_database_task\030\n \001(\0132$.grept" +
-      "ime.v1.meta.CreateDatabaseTaskH\000\022<\n\020crea" +
-      "te_flow_task\030\013 \001(\0132 .greptime.v1.meta.Cr" +
-      "eateFlowTaskH\000\0228\n\016drop_flow_task\030\014 \001(\0132\036" +
-      ".greptime.v1.meta.DropFlowTaskH\000B\006\n\004task" +
-      "\"\312\001\n\017DdlTaskResponse\0220\n\006header\030\001 \001(\0132 .g" +
-      "reptime.v1.meta.ResponseHeader\022*\n\003pid\030\002 " +
-      "\001(\0132\035.greptime.v1.meta.ProcedureId\022+\n\010ta" +
-      "ble_id\030\004 \001(\0132\031.greptime.v1.meta.TableId\022" +
-      ",\n\ttable_ids\030\005 \003(\0132\031.greptime.v1.meta.Ta" +
-      "bleId*#\n\013DdlTaskType\022\n\n\006Create\020\000\022\010\n\004Drop" +
-      "\020\001B<Z:github.com/GreptimeTeam/greptime-p" +
-      "roto/go/greptime/v1/metab\006proto3"
+      "\001(\0132\035.greptime.v1.DropDatabaseExpr\"B\n\016Cr" +
+      "eateFlowTask\0220\n\013create_flow\030\001 \001(\0132\033.grep" +
+      "time.v1.CreateFlowExpr\"<\n\014DropFlowTask\022," +
+      "\n\tdrop_flow\030\001 \001(\0132\031.greptime.v1.DropFlow" +
+      "Expr\"\207\006\n\016DdlTaskRequest\022/\n\006header\030\001 \001(\0132" +
+      "\037.greptime.v1.meta.RequestHeader\022>\n\021crea" +
+      "te_table_task\030\002 \001(\0132!.greptime.v1.meta.C" +
+      "reateTableTaskH\000\022:\n\017drop_table_task\030\003 \001(" +
+      "\0132\037.greptime.v1.meta.DropTableTaskH\000\022<\n\020" +
+      "alter_table_task\030\004 \001(\0132 .greptime.v1.met" +
+      "a.AlterTableTaskH\000\022B\n\023truncate_table_tas" +
+      "k\030\005 \001(\0132#.greptime.v1.meta.TruncateTable" +
+      "TaskH\000\022@\n\022create_table_tasks\030\006 \001(\0132\".gre" +
+      "ptime.v1.meta.CreateTableTasksH\000\022<\n\020drop" +
+      "_table_tasks\030\007 \001(\0132 .greptime.v1.meta.Dr" +
+      "opTableTasksH\000\022>\n\021alter_table_tasks\030\010 \001(" +
+      "\0132!.greptime.v1.meta.AlterTableTasksH\000\022@" +
+      "\n\022drop_database_task\030\t \001(\0132\".greptime.v1" +
+      ".meta.DropDatabaseTaskH\000\022D\n\024create_datab" +
+      "ase_task\030\n \001(\0132$.greptime.v1.meta.Create" +
+      "DatabaseTaskH\000\022<\n\020create_flow_task\030\013 \001(\013" +
+      "2 .greptime.v1.meta.CreateFlowTaskH\000\0228\n\016" +
+      "drop_flow_task\030\014 \001(\0132\036.greptime.v1.meta." +
+      "DropFlowTaskH\000B\006\n\004task\"\312\001\n\017DdlTaskRespon" +
+      "se\0220\n\006header\030\001 \001(\0132 .greptime.v1.meta.Re" +
+      "sponseHeader\022*\n\003pid\030\002 \001(\0132\035.greptime.v1." +
+      "meta.ProcedureId\022+\n\010table_id\030\004 \001(\0132\031.gre" +
+      "ptime.v1.meta.TableId\022,\n\ttable_ids\030\005 \003(\013" +
+      "2\031.greptime.v1.meta.TableId*#\n\013DdlTaskTy" +
+      "pe\022\n\n\006Create\020\000\022\010\n\004Drop\020\001B<Z:github.com/G" +
+      "reptimeTeam/greptime-proto/go/greptime/v" +
+      "1/metab\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -12948,13 +12948,13 @@ public greptime.v1.meta.Ddl.DdlTaskResponse getDefaultInstanceForType() {
     internal_static_greptime_v1_meta_CreateFlowTask_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_meta_CreateFlowTask_descriptor,
-        new java.lang.String[] { "CreateFlowTask", });
+        new java.lang.String[] { "CreateFlow", });
     internal_static_greptime_v1_meta_DropFlowTask_descriptor =
       getDescriptor().getMessageTypes().get(10);
     internal_static_greptime_v1_meta_DropFlowTask_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_meta_DropFlowTask_descriptor,
-        new java.lang.String[] { "DropFlowTask", });
+        new java.lang.String[] { "DropFlow", });
     internal_static_greptime_v1_meta_DdlTaskRequest_descriptor =
       getDescriptor().getMessageTypes().get(11);
     internal_static_greptime_v1_meta_DdlTaskRequest_fieldAccessorTable = new
diff --git a/java/src/main/java/io/greptime/v1/Ddl.java b/java/src/main/java/io/greptime/v1/Ddl.java
index c5a9ad1c..156e1923 100644
--- a/java/src/main/java/io/greptime/v1/Ddl.java
+++ b/java/src/main/java/io/greptime/v1/Ddl.java
@@ -94,34 +94,34 @@ public interface DdlRequestOrBuilder extends
     io.greptime.v1.Ddl.TruncateTableExprOrBuilder getTruncateTableOrBuilder();
 
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
-     * @return Whether the createFlowTask field is set.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
+     * @return Whether the createFlow field is set.
      */
-    boolean hasCreateFlowTask();
+    boolean hasCreateFlow();
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
-     * @return The createFlowTask.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
+     * @return The createFlow.
      */
-    io.greptime.v1.Ddl.CreateFlowTaskExpr getCreateFlowTask();
+    io.greptime.v1.Ddl.CreateFlowExpr getCreateFlow();
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
      */
-    io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder getCreateFlowTaskOrBuilder();
+    io.greptime.v1.Ddl.CreateFlowExprOrBuilder getCreateFlowOrBuilder();
 
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
-     * @return Whether the dropFlowTask field is set.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
+     * @return Whether the dropFlow field is set.
      */
-    boolean hasDropFlowTask();
+    boolean hasDropFlow();
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
-     * @return The dropFlowTask.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
+     * @return The dropFlow.
      */
-    io.greptime.v1.Ddl.DropFlowTaskExpr getDropFlowTask();
+    io.greptime.v1.Ddl.DropFlowExpr getDropFlow();
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
      */
-    io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder getDropFlowTaskOrBuilder();
+    io.greptime.v1.Ddl.DropFlowExprOrBuilder getDropFlowOrBuilder();
 
     public io.greptime.v1.Ddl.DdlRequest.ExprCase getExprCase();
   }
@@ -248,28 +248,28 @@ private DdlRequest(
               break;
             }
             case 66: {
-              io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder subBuilder = null;
+              io.greptime.v1.Ddl.CreateFlowExpr.Builder subBuilder = null;
               if (exprCase_ == 8) {
-                subBuilder = ((io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_).toBuilder();
+                subBuilder = ((io.greptime.v1.Ddl.CreateFlowExpr) expr_).toBuilder();
               }
               expr_ =
-                  input.readMessage(io.greptime.v1.Ddl.CreateFlowTaskExpr.parser(), extensionRegistry);
+                  input.readMessage(io.greptime.v1.Ddl.CreateFlowExpr.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom((io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_);
+                subBuilder.mergeFrom((io.greptime.v1.Ddl.CreateFlowExpr) expr_);
                 expr_ = subBuilder.buildPartial();
               }
               exprCase_ = 8;
               break;
             }
             case 74: {
-              io.greptime.v1.Ddl.DropFlowTaskExpr.Builder subBuilder = null;
+              io.greptime.v1.Ddl.DropFlowExpr.Builder subBuilder = null;
               if (exprCase_ == 9) {
-                subBuilder = ((io.greptime.v1.Ddl.DropFlowTaskExpr) expr_).toBuilder();
+                subBuilder = ((io.greptime.v1.Ddl.DropFlowExpr) expr_).toBuilder();
               }
               expr_ =
-                  input.readMessage(io.greptime.v1.Ddl.DropFlowTaskExpr.parser(), extensionRegistry);
+                  input.readMessage(io.greptime.v1.Ddl.DropFlowExpr.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom((io.greptime.v1.Ddl.DropFlowTaskExpr) expr_);
+                subBuilder.mergeFrom((io.greptime.v1.Ddl.DropFlowExpr) expr_);
                 expr_ = subBuilder.buildPartial();
               }
               exprCase_ = 9;
@@ -319,8 +319,8 @@ public enum ExprCase
       ALTER(3),
       DROP_TABLE(4),
       TRUNCATE_TABLE(7),
-      CREATE_FLOW_TASK(8),
-      DROP_FLOW_TASK(9),
+      CREATE_FLOW(8),
+      DROP_FLOW(9),
       EXPR_NOT_SET(0);
       private final int value;
       private ExprCase(int value) {
@@ -343,8 +343,8 @@ public static ExprCase forNumber(int value) {
           case 3: return ALTER;
           case 4: return DROP_TABLE;
           case 7: return TRUNCATE_TABLE;
-          case 8: return CREATE_FLOW_TASK;
-          case 9: return DROP_FLOW_TASK;
+          case 8: return CREATE_FLOW;
+          case 9: return DROP_FLOW;
           case 0: return EXPR_NOT_SET;
           default: return null;
         }
@@ -515,66 +515,66 @@ public io.greptime.v1.Ddl.TruncateTableExprOrBuilder getTruncateTableOrBuilder()
       return io.greptime.v1.Ddl.TruncateTableExpr.getDefaultInstance();
     }
 
-    public static final int CREATE_FLOW_TASK_FIELD_NUMBER = 8;
+    public static final int CREATE_FLOW_FIELD_NUMBER = 8;
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
-     * @return Whether the createFlowTask field is set.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
+     * @return Whether the createFlow field is set.
      */
     @java.lang.Override
-    public boolean hasCreateFlowTask() {
+    public boolean hasCreateFlow() {
       return exprCase_ == 8;
     }
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
-     * @return The createFlowTask.
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
+     * @return The createFlow.
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.CreateFlowTaskExpr getCreateFlowTask() {
+    public io.greptime.v1.Ddl.CreateFlowExpr getCreateFlow() {
       if (exprCase_ == 8) {
-         return (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_;
+         return (io.greptime.v1.Ddl.CreateFlowExpr) expr_;
       }
-      return io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+      return io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
     }
     /**
-     * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+     * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder getCreateFlowTaskOrBuilder() {
+    public io.greptime.v1.Ddl.CreateFlowExprOrBuilder getCreateFlowOrBuilder() {
       if (exprCase_ == 8) {
-         return (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_;
+         return (io.greptime.v1.Ddl.CreateFlowExpr) expr_;
       }
-      return io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+      return io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
     }
 
-    public static final int DROP_FLOW_TASK_FIELD_NUMBER = 9;
+    public static final int DROP_FLOW_FIELD_NUMBER = 9;
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
-     * @return Whether the dropFlowTask field is set.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
+     * @return Whether the dropFlow field is set.
      */
     @java.lang.Override
-    public boolean hasDropFlowTask() {
+    public boolean hasDropFlow() {
       return exprCase_ == 9;
     }
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
-     * @return The dropFlowTask.
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
+     * @return The dropFlow.
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.DropFlowTaskExpr getDropFlowTask() {
+    public io.greptime.v1.Ddl.DropFlowExpr getDropFlow() {
       if (exprCase_ == 9) {
-         return (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_;
+         return (io.greptime.v1.Ddl.DropFlowExpr) expr_;
       }
-      return io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+      return io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
     }
     /**
-     * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+     * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder getDropFlowTaskOrBuilder() {
+    public io.greptime.v1.Ddl.DropFlowExprOrBuilder getDropFlowOrBuilder() {
       if (exprCase_ == 9) {
-         return (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_;
+         return (io.greptime.v1.Ddl.DropFlowExpr) expr_;
       }
-      return io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+      return io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
     }
 
     private byte memoizedIsInitialized = -1;
@@ -607,10 +607,10 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
         output.writeMessage(7, (io.greptime.v1.Ddl.TruncateTableExpr) expr_);
       }
       if (exprCase_ == 8) {
-        output.writeMessage(8, (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_);
+        output.writeMessage(8, (io.greptime.v1.Ddl.CreateFlowExpr) expr_);
       }
       if (exprCase_ == 9) {
-        output.writeMessage(9, (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_);
+        output.writeMessage(9, (io.greptime.v1.Ddl.DropFlowExpr) expr_);
       }
       unknownFields.writeTo(output);
     }
@@ -643,11 +643,11 @@ public int getSerializedSize() {
       }
       if (exprCase_ == 8) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(8, (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_);
+          .computeMessageSize(8, (io.greptime.v1.Ddl.CreateFlowExpr) expr_);
       }
       if (exprCase_ == 9) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(9, (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_);
+          .computeMessageSize(9, (io.greptime.v1.Ddl.DropFlowExpr) expr_);
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -687,12 +687,12 @@ public boolean equals(final java.lang.Object obj) {
               .equals(other.getTruncateTable())) return false;
           break;
         case 8:
-          if (!getCreateFlowTask()
-              .equals(other.getCreateFlowTask())) return false;
+          if (!getCreateFlow()
+              .equals(other.getCreateFlow())) return false;
           break;
         case 9:
-          if (!getDropFlowTask()
-              .equals(other.getDropFlowTask())) return false;
+          if (!getDropFlow()
+              .equals(other.getDropFlow())) return false;
           break;
         case 0:
         default:
@@ -730,12 +730,12 @@ public int hashCode() {
           hash = (53 * hash) + getTruncateTable().hashCode();
           break;
         case 8:
-          hash = (37 * hash) + CREATE_FLOW_TASK_FIELD_NUMBER;
-          hash = (53 * hash) + getCreateFlowTask().hashCode();
+          hash = (37 * hash) + CREATE_FLOW_FIELD_NUMBER;
+          hash = (53 * hash) + getCreateFlow().hashCode();
           break;
         case 9:
-          hash = (37 * hash) + DROP_FLOW_TASK_FIELD_NUMBER;
-          hash = (53 * hash) + getDropFlowTask().hashCode();
+          hash = (37 * hash) + DROP_FLOW_FIELD_NUMBER;
+          hash = (53 * hash) + getDropFlow().hashCode();
           break;
         case 0:
         default:
@@ -944,17 +944,17 @@ public io.greptime.v1.Ddl.DdlRequest buildPartial() {
           }
         }
         if (exprCase_ == 8) {
-          if (createFlowTaskBuilder_ == null) {
+          if (createFlowBuilder_ == null) {
             result.expr_ = expr_;
           } else {
-            result.expr_ = createFlowTaskBuilder_.build();
+            result.expr_ = createFlowBuilder_.build();
           }
         }
         if (exprCase_ == 9) {
-          if (dropFlowTaskBuilder_ == null) {
+          if (dropFlowBuilder_ == null) {
             result.expr_ = expr_;
           } else {
-            result.expr_ = dropFlowTaskBuilder_.build();
+            result.expr_ = dropFlowBuilder_.build();
           }
         }
         result.exprCase_ = exprCase_;
@@ -1027,12 +1027,12 @@ public Builder mergeFrom(io.greptime.v1.Ddl.DdlRequest other) {
             mergeTruncateTable(other.getTruncateTable());
             break;
           }
-          case CREATE_FLOW_TASK: {
-            mergeCreateFlowTask(other.getCreateFlowTask());
+          case CREATE_FLOW: {
+            mergeCreateFlow(other.getCreateFlow());
             break;
           }
-          case DROP_FLOW_TASK: {
-            mergeDropFlowTask(other.getDropFlowTask());
+          case DROP_FLOW: {
+            mergeDropFlow(other.getDropFlow());
             break;
           }
           case EXPR_NOT_SET: {
@@ -1794,71 +1794,71 @@ public io.greptime.v1.Ddl.TruncateTableExprOrBuilder getTruncateTableOrBuilder()
       }
 
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.CreateFlowTaskExpr, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder, io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder> createFlowTaskBuilder_;
+          io.greptime.v1.Ddl.CreateFlowExpr, io.greptime.v1.Ddl.CreateFlowExpr.Builder, io.greptime.v1.Ddl.CreateFlowExprOrBuilder> createFlowBuilder_;
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
-       * @return Whether the createFlowTask field is set.
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
+       * @return Whether the createFlow field is set.
        */
       @java.lang.Override
-      public boolean hasCreateFlowTask() {
+      public boolean hasCreateFlow() {
         return exprCase_ == 8;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
-       * @return The createFlowTask.
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
+       * @return The createFlow.
        */
       @java.lang.Override
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr getCreateFlowTask() {
-        if (createFlowTaskBuilder_ == null) {
+      public io.greptime.v1.Ddl.CreateFlowExpr getCreateFlow() {
+        if (createFlowBuilder_ == null) {
           if (exprCase_ == 8) {
-            return (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_;
+            return (io.greptime.v1.Ddl.CreateFlowExpr) expr_;
           }
-          return io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+          return io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
         } else {
           if (exprCase_ == 8) {
-            return createFlowTaskBuilder_.getMessage();
+            return createFlowBuilder_.getMessage();
           }
-          return io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+          return io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
-      public Builder setCreateFlowTask(io.greptime.v1.Ddl.CreateFlowTaskExpr value) {
-        if (createFlowTaskBuilder_ == null) {
+      public Builder setCreateFlow(io.greptime.v1.Ddl.CreateFlowExpr value) {
+        if (createFlowBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
           expr_ = value;
           onChanged();
         } else {
-          createFlowTaskBuilder_.setMessage(value);
+          createFlowBuilder_.setMessage(value);
         }
         exprCase_ = 8;
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
-      public Builder setCreateFlowTask(
-          io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder builderForValue) {
-        if (createFlowTaskBuilder_ == null) {
+      public Builder setCreateFlow(
+          io.greptime.v1.Ddl.CreateFlowExpr.Builder builderForValue) {
+        if (createFlowBuilder_ == null) {
           expr_ = builderForValue.build();
           onChanged();
         } else {
-          createFlowTaskBuilder_.setMessage(builderForValue.build());
+          createFlowBuilder_.setMessage(builderForValue.build());
         }
         exprCase_ = 8;
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
-      public Builder mergeCreateFlowTask(io.greptime.v1.Ddl.CreateFlowTaskExpr value) {
-        if (createFlowTaskBuilder_ == null) {
+      public Builder mergeCreateFlow(io.greptime.v1.Ddl.CreateFlowExpr value) {
+        if (createFlowBuilder_ == null) {
           if (exprCase_ == 8 &&
-              expr_ != io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance()) {
-            expr_ = io.greptime.v1.Ddl.CreateFlowTaskExpr.newBuilder((io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_)
+              expr_ != io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance()) {
+            expr_ = io.greptime.v1.Ddl.CreateFlowExpr.newBuilder((io.greptime.v1.Ddl.CreateFlowExpr) expr_)
                 .mergeFrom(value).buildPartial();
           } else {
             expr_ = value;
@@ -1866,19 +1866,19 @@ public Builder mergeCreateFlowTask(io.greptime.v1.Ddl.CreateFlowTaskExpr value)
           onChanged();
         } else {
           if (exprCase_ == 8) {
-            createFlowTaskBuilder_.mergeFrom(value);
+            createFlowBuilder_.mergeFrom(value);
           } else {
-            createFlowTaskBuilder_.setMessage(value);
+            createFlowBuilder_.setMessage(value);
           }
         }
         exprCase_ = 8;
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
-      public Builder clearCreateFlowTask() {
-        if (createFlowTaskBuilder_ == null) {
+      public Builder clearCreateFlow() {
+        if (createFlowBuilder_ == null) {
           if (exprCase_ == 8) {
             exprCase_ = 0;
             expr_ = null;
@@ -1889,118 +1889,118 @@ public Builder clearCreateFlowTask() {
             exprCase_ = 0;
             expr_ = null;
           }
-          createFlowTaskBuilder_.clear();
+          createFlowBuilder_.clear();
         }
         return this;
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder getCreateFlowTaskBuilder() {
-        return getCreateFlowTaskFieldBuilder().getBuilder();
+      public io.greptime.v1.Ddl.CreateFlowExpr.Builder getCreateFlowBuilder() {
+        return getCreateFlowFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
       @java.lang.Override
-      public io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder getCreateFlowTaskOrBuilder() {
-        if ((exprCase_ == 8) && (createFlowTaskBuilder_ != null)) {
-          return createFlowTaskBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.Ddl.CreateFlowExprOrBuilder getCreateFlowOrBuilder() {
+        if ((exprCase_ == 8) && (createFlowBuilder_ != null)) {
+          return createFlowBuilder_.getMessageOrBuilder();
         } else {
           if (exprCase_ == 8) {
-            return (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_;
+            return (io.greptime.v1.Ddl.CreateFlowExpr) expr_;
           }
-          return io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+          return io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.CreateFlowTaskExpr create_flow_task = 8;</code>
+       * <code>.greptime.v1.CreateFlowExpr create_flow = 8;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.CreateFlowTaskExpr, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder, io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder> 
-          getCreateFlowTaskFieldBuilder() {
-        if (createFlowTaskBuilder_ == null) {
+          io.greptime.v1.Ddl.CreateFlowExpr, io.greptime.v1.Ddl.CreateFlowExpr.Builder, io.greptime.v1.Ddl.CreateFlowExprOrBuilder> 
+          getCreateFlowFieldBuilder() {
+        if (createFlowBuilder_ == null) {
           if (!(exprCase_ == 8)) {
-            expr_ = io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+            expr_ = io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
           }
-          createFlowTaskBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.Ddl.CreateFlowTaskExpr, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder, io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder>(
-                  (io.greptime.v1.Ddl.CreateFlowTaskExpr) expr_,
+          createFlowBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.Ddl.CreateFlowExpr, io.greptime.v1.Ddl.CreateFlowExpr.Builder, io.greptime.v1.Ddl.CreateFlowExprOrBuilder>(
+                  (io.greptime.v1.Ddl.CreateFlowExpr) expr_,
                   getParentForChildren(),
                   isClean());
           expr_ = null;
         }
         exprCase_ = 8;
         onChanged();;
-        return createFlowTaskBuilder_;
+        return createFlowBuilder_;
       }
 
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.DropFlowTaskExpr, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder, io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder> dropFlowTaskBuilder_;
+          io.greptime.v1.Ddl.DropFlowExpr, io.greptime.v1.Ddl.DropFlowExpr.Builder, io.greptime.v1.Ddl.DropFlowExprOrBuilder> dropFlowBuilder_;
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
-       * @return Whether the dropFlowTask field is set.
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
+       * @return Whether the dropFlow field is set.
        */
       @java.lang.Override
-      public boolean hasDropFlowTask() {
+      public boolean hasDropFlow() {
         return exprCase_ == 9;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
-       * @return The dropFlowTask.
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
+       * @return The dropFlow.
        */
       @java.lang.Override
-      public io.greptime.v1.Ddl.DropFlowTaskExpr getDropFlowTask() {
-        if (dropFlowTaskBuilder_ == null) {
+      public io.greptime.v1.Ddl.DropFlowExpr getDropFlow() {
+        if (dropFlowBuilder_ == null) {
           if (exprCase_ == 9) {
-            return (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_;
+            return (io.greptime.v1.Ddl.DropFlowExpr) expr_;
           }
-          return io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+          return io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
         } else {
           if (exprCase_ == 9) {
-            return dropFlowTaskBuilder_.getMessage();
+            return dropFlowBuilder_.getMessage();
           }
-          return io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+          return io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
-      public Builder setDropFlowTask(io.greptime.v1.Ddl.DropFlowTaskExpr value) {
-        if (dropFlowTaskBuilder_ == null) {
+      public Builder setDropFlow(io.greptime.v1.Ddl.DropFlowExpr value) {
+        if (dropFlowBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
           expr_ = value;
           onChanged();
         } else {
-          dropFlowTaskBuilder_.setMessage(value);
+          dropFlowBuilder_.setMessage(value);
         }
         exprCase_ = 9;
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
-      public Builder setDropFlowTask(
-          io.greptime.v1.Ddl.DropFlowTaskExpr.Builder builderForValue) {
-        if (dropFlowTaskBuilder_ == null) {
+      public Builder setDropFlow(
+          io.greptime.v1.Ddl.DropFlowExpr.Builder builderForValue) {
+        if (dropFlowBuilder_ == null) {
           expr_ = builderForValue.build();
           onChanged();
         } else {
-          dropFlowTaskBuilder_.setMessage(builderForValue.build());
+          dropFlowBuilder_.setMessage(builderForValue.build());
         }
         exprCase_ = 9;
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
-      public Builder mergeDropFlowTask(io.greptime.v1.Ddl.DropFlowTaskExpr value) {
-        if (dropFlowTaskBuilder_ == null) {
+      public Builder mergeDropFlow(io.greptime.v1.Ddl.DropFlowExpr value) {
+        if (dropFlowBuilder_ == null) {
           if (exprCase_ == 9 &&
-              expr_ != io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance()) {
-            expr_ = io.greptime.v1.Ddl.DropFlowTaskExpr.newBuilder((io.greptime.v1.Ddl.DropFlowTaskExpr) expr_)
+              expr_ != io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance()) {
+            expr_ = io.greptime.v1.Ddl.DropFlowExpr.newBuilder((io.greptime.v1.Ddl.DropFlowExpr) expr_)
                 .mergeFrom(value).buildPartial();
           } else {
             expr_ = value;
@@ -2008,19 +2008,19 @@ public Builder mergeDropFlowTask(io.greptime.v1.Ddl.DropFlowTaskExpr value) {
           onChanged();
         } else {
           if (exprCase_ == 9) {
-            dropFlowTaskBuilder_.mergeFrom(value);
+            dropFlowBuilder_.mergeFrom(value);
           } else {
-            dropFlowTaskBuilder_.setMessage(value);
+            dropFlowBuilder_.setMessage(value);
           }
         }
         exprCase_ = 9;
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
-      public Builder clearDropFlowTask() {
-        if (dropFlowTaskBuilder_ == null) {
+      public Builder clearDropFlow() {
+        if (dropFlowBuilder_ == null) {
           if (exprCase_ == 9) {
             exprCase_ = 0;
             expr_ = null;
@@ -2031,50 +2031,50 @@ public Builder clearDropFlowTask() {
             exprCase_ = 0;
             expr_ = null;
           }
-          dropFlowTaskBuilder_.clear();
+          dropFlowBuilder_.clear();
         }
         return this;
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
-      public io.greptime.v1.Ddl.DropFlowTaskExpr.Builder getDropFlowTaskBuilder() {
-        return getDropFlowTaskFieldBuilder().getBuilder();
+      public io.greptime.v1.Ddl.DropFlowExpr.Builder getDropFlowBuilder() {
+        return getDropFlowFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
       @java.lang.Override
-      public io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder getDropFlowTaskOrBuilder() {
-        if ((exprCase_ == 9) && (dropFlowTaskBuilder_ != null)) {
-          return dropFlowTaskBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.Ddl.DropFlowExprOrBuilder getDropFlowOrBuilder() {
+        if ((exprCase_ == 9) && (dropFlowBuilder_ != null)) {
+          return dropFlowBuilder_.getMessageOrBuilder();
         } else {
           if (exprCase_ == 9) {
-            return (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_;
+            return (io.greptime.v1.Ddl.DropFlowExpr) expr_;
           }
-          return io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+          return io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.DropFlowTaskExpr drop_flow_task = 9;</code>
+       * <code>.greptime.v1.DropFlowExpr drop_flow = 9;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.Ddl.DropFlowTaskExpr, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder, io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder> 
-          getDropFlowTaskFieldBuilder() {
-        if (dropFlowTaskBuilder_ == null) {
+          io.greptime.v1.Ddl.DropFlowExpr, io.greptime.v1.Ddl.DropFlowExpr.Builder, io.greptime.v1.Ddl.DropFlowExprOrBuilder> 
+          getDropFlowFieldBuilder() {
+        if (dropFlowBuilder_ == null) {
           if (!(exprCase_ == 9)) {
-            expr_ = io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+            expr_ = io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
           }
-          dropFlowTaskBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.Ddl.DropFlowTaskExpr, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder, io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder>(
-                  (io.greptime.v1.Ddl.DropFlowTaskExpr) expr_,
+          dropFlowBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.Ddl.DropFlowExpr, io.greptime.v1.Ddl.DropFlowExpr.Builder, io.greptime.v1.Ddl.DropFlowExprOrBuilder>(
+                  (io.greptime.v1.Ddl.DropFlowExpr) expr_,
                   getParentForChildren(),
                   isClean());
           expr_ = null;
         }
         exprCase_ = 9;
         onChanged();;
-        return dropFlowTaskBuilder_;
+        return dropFlowBuilder_;
       }
       @java.lang.Override
       public final Builder setUnknownFields(
@@ -2129,8 +2129,8 @@ public io.greptime.v1.Ddl.DdlRequest getDefaultInstanceForType() {
 
   }
 
-  public interface CreateFlowTaskExprOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:greptime.v1.CreateFlowTaskExpr)
+  public interface CreateFlowExprOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.CreateFlowExpr)
       com.google.protobuf.MessageOrBuilder {
 
     /**
@@ -2146,16 +2146,16 @@ public interface CreateFlowTaskExprOrBuilder extends
         getCatalogNameBytes();
 
     /**
-     * <code>string task_name = 2;</code>
-     * @return The taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The flowName.
      */
-    java.lang.String getTaskName();
+    java.lang.String getFlowName();
     /**
-     * <code>string task_name = 2;</code>
-     * @return The bytes for taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The bytes for flowName.
      */
     com.google.protobuf.ByteString
-        getTaskNameBytes();
+        getFlowNameBytes();
 
     /**
      * <code>repeated .greptime.v1.TableName source_table_names = 3;</code>
@@ -2245,60 +2245,60 @@ io.greptime.v1.Common.TableNameOrBuilder getSourceTableNamesOrBuilder(
         getSqlBytes();
 
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
-    int getTaskOptionsCount();
+    int getFlowOptionsCount();
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
-    boolean containsTaskOptions(
+    boolean containsFlowOptions(
         java.lang.String key);
     /**
-     * Use {@link #getTaskOptionsMap()} instead.
+     * Use {@link #getFlowOptionsMap()} instead.
      */
     @java.lang.Deprecated
     java.util.Map<java.lang.String, java.lang.String>
-    getTaskOptions();
+    getFlowOptions();
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
     java.util.Map<java.lang.String, java.lang.String>
-    getTaskOptionsMap();
+    getFlowOptionsMap();
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
 
     /* nullable */
-java.lang.String getTaskOptionsOrDefault(
+java.lang.String getFlowOptionsOrDefault(
         java.lang.String key,
         /* nullable */
 java.lang.String defaultValue);
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
 
-    java.lang.String getTaskOptionsOrThrow(
+    java.lang.String getFlowOptionsOrThrow(
         java.lang.String key);
   }
   /**
    * <pre>
-   * Create a flow task to run the SQL when new data arrives.
+   * Create a flow to run the SQL when new data arrives.
    * </pre>
    *
-   * Protobuf type {@code greptime.v1.CreateFlowTaskExpr}
+   * Protobuf type {@code greptime.v1.CreateFlowExpr}
    */
-  public static final class CreateFlowTaskExpr extends
+  public static final class CreateFlowExpr extends
       com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:greptime.v1.CreateFlowTaskExpr)
-      CreateFlowTaskExprOrBuilder {
+      // @@protoc_insertion_point(message_implements:greptime.v1.CreateFlowExpr)
+      CreateFlowExprOrBuilder {
   private static final long serialVersionUID = 0L;
-    // Use CreateFlowTaskExpr.newBuilder() to construct.
-    private CreateFlowTaskExpr(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    // Use CreateFlowExpr.newBuilder() to construct.
+    private CreateFlowExpr(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
     }
-    private CreateFlowTaskExpr() {
+    private CreateFlowExpr() {
       catalogName_ = "";
-      taskName_ = "";
+      flowName_ = "";
       sourceTableNames_ = java.util.Collections.emptyList();
       expireWhen_ = "";
       comment_ = "";
@@ -2309,7 +2309,7 @@ private CreateFlowTaskExpr() {
     @SuppressWarnings({"unused"})
     protected java.lang.Object newInstance(
         UnusedPrivateParameter unused) {
-      return new CreateFlowTaskExpr();
+      return new CreateFlowExpr();
     }
 
     @java.lang.Override
@@ -2317,7 +2317,7 @@ protected java.lang.Object newInstance(
     getUnknownFields() {
       return this.unknownFields;
     }
-    private CreateFlowTaskExpr(
+    private CreateFlowExpr(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
@@ -2345,7 +2345,7 @@ private CreateFlowTaskExpr(
             case 18: {
               java.lang.String s = input.readStringRequireUtf8();
 
-              taskName_ = s;
+              flowName_ = s;
               break;
             }
             case 26: {
@@ -2400,15 +2400,15 @@ private CreateFlowTaskExpr(
             }
             case 82: {
               if (!((mutable_bitField0_ & 0x00000002) != 0)) {
-                taskOptions_ = com.google.protobuf.MapField.newMapField(
-                    TaskOptionsDefaultEntryHolder.defaultEntry);
+                flowOptions_ = com.google.protobuf.MapField.newMapField(
+                    FlowOptionsDefaultEntryHolder.defaultEntry);
                 mutable_bitField0_ |= 0x00000002;
               }
               com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
-              taskOptions__ = input.readMessage(
-                  TaskOptionsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
-              taskOptions_.getMutableMap().put(
-                  taskOptions__.getKey(), taskOptions__.getValue());
+              flowOptions__ = input.readMessage(
+                  FlowOptionsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+              flowOptions_.getMutableMap().put(
+                  flowOptions__.getKey(), flowOptions__.getValue());
               break;
             }
             default: {
@@ -2437,7 +2437,7 @@ private CreateFlowTaskExpr(
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowTaskExpr_descriptor;
+      return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowExpr_descriptor;
     }
 
     @SuppressWarnings({"rawtypes"})
@@ -2446,7 +2446,7 @@ protected com.google.protobuf.MapField internalGetMapField(
         int number) {
       switch (number) {
         case 10:
-          return internalGetTaskOptions();
+          return internalGetFlowOptions();
         default:
           throw new RuntimeException(
               "Invalid map field number: " + number);
@@ -2455,9 +2455,9 @@ protected com.google.protobuf.MapField internalGetMapField(
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowTaskExpr_fieldAccessorTable
+      return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowExpr_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              io.greptime.v1.Ddl.CreateFlowTaskExpr.class, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder.class);
+              io.greptime.v1.Ddl.CreateFlowExpr.class, io.greptime.v1.Ddl.CreateFlowExpr.Builder.class);
     }
 
     public static final int CATALOG_NAME_FIELD_NUMBER = 1;
@@ -2498,38 +2498,38 @@ public java.lang.String getCatalogName() {
       }
     }
 
-    public static final int TASK_NAME_FIELD_NUMBER = 2;
-    private volatile java.lang.Object taskName_;
+    public static final int FLOW_NAME_FIELD_NUMBER = 2;
+    private volatile java.lang.Object flowName_;
     /**
-     * <code>string task_name = 2;</code>
-     * @return The taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The flowName.
      */
     @java.lang.Override
-    public java.lang.String getTaskName() {
-      java.lang.Object ref = taskName_;
+    public java.lang.String getFlowName() {
+      java.lang.Object ref = flowName_;
       if (ref instanceof java.lang.String) {
         return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
         java.lang.String s = bs.toStringUtf8();
-        taskName_ = s;
+        flowName_ = s;
         return s;
       }
     }
     /**
-     * <code>string task_name = 2;</code>
-     * @return The bytes for taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The bytes for flowName.
      */
     @java.lang.Override
     public com.google.protobuf.ByteString
-        getTaskNameBytes() {
-      java.lang.Object ref = taskName_;
+        getFlowNameBytes() {
+      java.lang.Object ref = flowName_;
       if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
                 (java.lang.String) ref);
-        taskName_ = b;
+        flowName_ = b;
         return b;
       } else {
         return (com.google.protobuf.ByteString) ref;
@@ -2738,81 +2738,81 @@ public java.lang.String getSql() {
       }
     }
 
-    public static final int TASK_OPTIONS_FIELD_NUMBER = 10;
-    private static final class TaskOptionsDefaultEntryHolder {
+    public static final int FLOW_OPTIONS_FIELD_NUMBER = 10;
+    private static final class FlowOptionsDefaultEntryHolder {
       static final com.google.protobuf.MapEntry<
           java.lang.String, java.lang.String> defaultEntry =
               com.google.protobuf.MapEntry
               .<java.lang.String, java.lang.String>newDefaultInstance(
-                  io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowTaskExpr_TaskOptionsEntry_descriptor, 
+                  io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowExpr_FlowOptionsEntry_descriptor, 
                   com.google.protobuf.WireFormat.FieldType.STRING,
                   "",
                   com.google.protobuf.WireFormat.FieldType.STRING,
                   "");
     }
     private com.google.protobuf.MapField<
-        java.lang.String, java.lang.String> taskOptions_;
+        java.lang.String, java.lang.String> flowOptions_;
     private com.google.protobuf.MapField<java.lang.String, java.lang.String>
-    internalGetTaskOptions() {
-      if (taskOptions_ == null) {
+    internalGetFlowOptions() {
+      if (flowOptions_ == null) {
         return com.google.protobuf.MapField.emptyMapField(
-            TaskOptionsDefaultEntryHolder.defaultEntry);
+            FlowOptionsDefaultEntryHolder.defaultEntry);
       }
-      return taskOptions_;
+      return flowOptions_;
     }
 
-    public int getTaskOptionsCount() {
-      return internalGetTaskOptions().getMap().size();
+    public int getFlowOptionsCount() {
+      return internalGetFlowOptions().getMap().size();
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
 
     @java.lang.Override
-    public boolean containsTaskOptions(
+    public boolean containsFlowOptions(
         java.lang.String key) {
       if (key == null) { throw new NullPointerException("map key"); }
-      return internalGetTaskOptions().getMap().containsKey(key);
+      return internalGetFlowOptions().getMap().containsKey(key);
     }
     /**
-     * Use {@link #getTaskOptionsMap()} instead.
+     * Use {@link #getFlowOptionsMap()} instead.
      */
     @java.lang.Override
     @java.lang.Deprecated
-    public java.util.Map<java.lang.String, java.lang.String> getTaskOptions() {
-      return getTaskOptionsMap();
+    public java.util.Map<java.lang.String, java.lang.String> getFlowOptions() {
+      return getFlowOptionsMap();
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
     @java.lang.Override
 
-    public java.util.Map<java.lang.String, java.lang.String> getTaskOptionsMap() {
-      return internalGetTaskOptions().getMap();
+    public java.util.Map<java.lang.String, java.lang.String> getFlowOptionsMap() {
+      return internalGetFlowOptions().getMap();
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
     @java.lang.Override
 
-    public java.lang.String getTaskOptionsOrDefault(
+    public java.lang.String getFlowOptionsOrDefault(
         java.lang.String key,
         java.lang.String defaultValue) {
       if (key == null) { throw new NullPointerException("map key"); }
       java.util.Map<java.lang.String, java.lang.String> map =
-          internalGetTaskOptions().getMap();
+          internalGetFlowOptions().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 10;</code>
+     * <code>map&lt;string, string&gt; flow_options = 10;</code>
      */
     @java.lang.Override
 
-    public java.lang.String getTaskOptionsOrThrow(
+    public java.lang.String getFlowOptionsOrThrow(
         java.lang.String key) {
       if (key == null) { throw new NullPointerException("map key"); }
       java.util.Map<java.lang.String, java.lang.String> map =
-          internalGetTaskOptions().getMap();
+          internalGetFlowOptions().getMap();
       if (!map.containsKey(key)) {
         throw new java.lang.IllegalArgumentException();
       }
@@ -2836,8 +2836,8 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(catalogName_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, catalogName_);
       }
-      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(taskName_)) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, taskName_);
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(flowName_)) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, flowName_);
       }
       for (int i = 0; i < sourceTableNames_.size(); i++) {
         output.writeMessage(3, sourceTableNames_.get(i));
@@ -2863,8 +2863,8 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       com.google.protobuf.GeneratedMessageV3
         .serializeStringMapTo(
           output,
-          internalGetTaskOptions(),
-          TaskOptionsDefaultEntryHolder.defaultEntry,
+          internalGetFlowOptions(),
+          FlowOptionsDefaultEntryHolder.defaultEntry,
           10);
       unknownFields.writeTo(output);
     }
@@ -2878,8 +2878,8 @@ public int getSerializedSize() {
       if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(catalogName_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, catalogName_);
       }
-      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(taskName_)) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, taskName_);
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(flowName_)) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, flowName_);
       }
       for (int i = 0; i < sourceTableNames_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
@@ -2907,14 +2907,14 @@ public int getSerializedSize() {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(9, sql_);
       }
       for (java.util.Map.Entry<java.lang.String, java.lang.String> entry
-           : internalGetTaskOptions().getMap().entrySet()) {
+           : internalGetFlowOptions().getMap().entrySet()) {
         com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
-        taskOptions__ = TaskOptionsDefaultEntryHolder.defaultEntry.newBuilderForType()
+        flowOptions__ = FlowOptionsDefaultEntryHolder.defaultEntry.newBuilderForType()
             .setKey(entry.getKey())
             .setValue(entry.getValue())
             .build();
         size += com.google.protobuf.CodedOutputStream
-            .computeMessageSize(10, taskOptions__);
+            .computeMessageSize(10, flowOptions__);
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -2926,15 +2926,15 @@ public boolean equals(final java.lang.Object obj) {
       if (obj == this) {
        return true;
       }
-      if (!(obj instanceof io.greptime.v1.Ddl.CreateFlowTaskExpr)) {
+      if (!(obj instanceof io.greptime.v1.Ddl.CreateFlowExpr)) {
         return super.equals(obj);
       }
-      io.greptime.v1.Ddl.CreateFlowTaskExpr other = (io.greptime.v1.Ddl.CreateFlowTaskExpr) obj;
+      io.greptime.v1.Ddl.CreateFlowExpr other = (io.greptime.v1.Ddl.CreateFlowExpr) obj;
 
       if (!getCatalogName()
           .equals(other.getCatalogName())) return false;
-      if (!getTaskName()
-          .equals(other.getTaskName())) return false;
+      if (!getFlowName()
+          .equals(other.getFlowName())) return false;
       if (!getSourceTableNamesList()
           .equals(other.getSourceTableNamesList())) return false;
       if (hasSinkTableName() != other.hasSinkTableName()) return false;
@@ -2952,8 +2952,8 @@ public boolean equals(final java.lang.Object obj) {
           .equals(other.getComment())) return false;
       if (!getSql()
           .equals(other.getSql())) return false;
-      if (!internalGetTaskOptions().equals(
-          other.internalGetTaskOptions())) return false;
+      if (!internalGetFlowOptions().equals(
+          other.internalGetFlowOptions())) return false;
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
     }
@@ -2967,8 +2967,8 @@ public int hashCode() {
       hash = (19 * hash) + getDescriptor().hashCode();
       hash = (37 * hash) + CATALOG_NAME_FIELD_NUMBER;
       hash = (53 * hash) + getCatalogName().hashCode();
-      hash = (37 * hash) + TASK_NAME_FIELD_NUMBER;
-      hash = (53 * hash) + getTaskName().hashCode();
+      hash = (37 * hash) + FLOW_NAME_FIELD_NUMBER;
+      hash = (53 * hash) + getFlowName().hashCode();
       if (getSourceTableNamesCount() > 0) {
         hash = (37 * hash) + SOURCE_TABLE_NAMES_FIELD_NUMBER;
         hash = (53 * hash) + getSourceTableNamesList().hashCode();
@@ -2989,78 +2989,78 @@ public int hashCode() {
       hash = (53 * hash) + getComment().hashCode();
       hash = (37 * hash) + SQL_FIELD_NUMBER;
       hash = (53 * hash) + getSql().hashCode();
-      if (!internalGetTaskOptions().getMap().isEmpty()) {
-        hash = (37 * hash) + TASK_OPTIONS_FIELD_NUMBER;
-        hash = (53 * hash) + internalGetTaskOptions().hashCode();
+      if (!internalGetFlowOptions().getMap().isEmpty()) {
+        hash = (37 * hash) + FLOW_OPTIONS_FIELD_NUMBER;
+        hash = (53 * hash) + internalGetFlowOptions().hashCode();
       }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
     }
 
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         java.nio.ByteBuffer data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         java.nio.ByteBuffer data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(byte[] data)
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(java.io.InputStream input)
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseDelimitedFrom(java.io.InputStream input)
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseDelimitedFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.CreateFlowExpr parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
@@ -3073,7 +3073,7 @@ public static io.greptime.v1.Ddl.CreateFlowTaskExpr parseFrom(
     public static Builder newBuilder() {
       return DEFAULT_INSTANCE.toBuilder();
     }
-    public static Builder newBuilder(io.greptime.v1.Ddl.CreateFlowTaskExpr prototype) {
+    public static Builder newBuilder(io.greptime.v1.Ddl.CreateFlowExpr prototype) {
       return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
     }
     @java.lang.Override
@@ -3090,18 +3090,18 @@ protected Builder newBuilderForType(
     }
     /**
      * <pre>
-     * Create a flow task to run the SQL when new data arrives.
+     * Create a flow to run the SQL when new data arrives.
      * </pre>
      *
-     * Protobuf type {@code greptime.v1.CreateFlowTaskExpr}
+     * Protobuf type {@code greptime.v1.CreateFlowExpr}
      */
     public static final class Builder extends
         com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:greptime.v1.CreateFlowTaskExpr)
-        io.greptime.v1.Ddl.CreateFlowTaskExprOrBuilder {
+        // @@protoc_insertion_point(builder_implements:greptime.v1.CreateFlowExpr)
+        io.greptime.v1.Ddl.CreateFlowExprOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowTaskExpr_descriptor;
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowExpr_descriptor;
       }
 
       @SuppressWarnings({"rawtypes"})
@@ -3109,7 +3109,7 @@ protected com.google.protobuf.MapField internalGetMapField(
           int number) {
         switch (number) {
           case 10:
-            return internalGetTaskOptions();
+            return internalGetFlowOptions();
           default:
             throw new RuntimeException(
                 "Invalid map field number: " + number);
@@ -3120,7 +3120,7 @@ protected com.google.protobuf.MapField internalGetMutableMapField(
           int number) {
         switch (number) {
           case 10:
-            return internalGetMutableTaskOptions();
+            return internalGetMutableFlowOptions();
           default:
             throw new RuntimeException(
                 "Invalid map field number: " + number);
@@ -3129,12 +3129,12 @@ protected com.google.protobuf.MapField internalGetMutableMapField(
       @java.lang.Override
       protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowTaskExpr_fieldAccessorTable
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowExpr_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                io.greptime.v1.Ddl.CreateFlowTaskExpr.class, io.greptime.v1.Ddl.CreateFlowTaskExpr.Builder.class);
+                io.greptime.v1.Ddl.CreateFlowExpr.class, io.greptime.v1.Ddl.CreateFlowExpr.Builder.class);
       }
 
-      // Construct using io.greptime.v1.Ddl.CreateFlowTaskExpr.newBuilder()
+      // Construct using io.greptime.v1.Ddl.CreateFlowExpr.newBuilder()
       private Builder() {
         maybeForceBuilderInitialization();
       }
@@ -3155,7 +3155,7 @@ public Builder clear() {
         super.clear();
         catalogName_ = "";
 
-        taskName_ = "";
+        flowName_ = "";
 
         if (sourceTableNamesBuilder_ == null) {
           sourceTableNames_ = java.util.Collections.emptyList();
@@ -3179,24 +3179,24 @@ public Builder clear() {
 
         sql_ = "";
 
-        internalGetMutableTaskOptions().clear();
+        internalGetMutableFlowOptions().clear();
         return this;
       }
 
       @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowTaskExpr_descriptor;
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_CreateFlowExpr_descriptor;
       }
 
       @java.lang.Override
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr getDefaultInstanceForType() {
-        return io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance();
+      public io.greptime.v1.Ddl.CreateFlowExpr getDefaultInstanceForType() {
+        return io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance();
       }
 
       @java.lang.Override
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr build() {
-        io.greptime.v1.Ddl.CreateFlowTaskExpr result = buildPartial();
+      public io.greptime.v1.Ddl.CreateFlowExpr build() {
+        io.greptime.v1.Ddl.CreateFlowExpr result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
@@ -3204,11 +3204,11 @@ public io.greptime.v1.Ddl.CreateFlowTaskExpr build() {
       }
 
       @java.lang.Override
-      public io.greptime.v1.Ddl.CreateFlowTaskExpr buildPartial() {
-        io.greptime.v1.Ddl.CreateFlowTaskExpr result = new io.greptime.v1.Ddl.CreateFlowTaskExpr(this);
+      public io.greptime.v1.Ddl.CreateFlowExpr buildPartial() {
+        io.greptime.v1.Ddl.CreateFlowExpr result = new io.greptime.v1.Ddl.CreateFlowExpr(this);
         int from_bitField0_ = bitField0_;
         result.catalogName_ = catalogName_;
-        result.taskName_ = taskName_;
+        result.flowName_ = flowName_;
         if (sourceTableNamesBuilder_ == null) {
           if (((bitField0_ & 0x00000001) != 0)) {
             sourceTableNames_ = java.util.Collections.unmodifiableList(sourceTableNames_);
@@ -3228,8 +3228,8 @@ public io.greptime.v1.Ddl.CreateFlowTaskExpr buildPartial() {
         result.expireWhen_ = expireWhen_;
         result.comment_ = comment_;
         result.sql_ = sql_;
-        result.taskOptions_ = internalGetTaskOptions();
-        result.taskOptions_.makeImmutable();
+        result.flowOptions_ = internalGetFlowOptions();
+        result.flowOptions_.makeImmutable();
         onBuilt();
         return result;
       }
@@ -3268,22 +3268,22 @@ public Builder addRepeatedField(
       }
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof io.greptime.v1.Ddl.CreateFlowTaskExpr) {
-          return mergeFrom((io.greptime.v1.Ddl.CreateFlowTaskExpr)other);
+        if (other instanceof io.greptime.v1.Ddl.CreateFlowExpr) {
+          return mergeFrom((io.greptime.v1.Ddl.CreateFlowExpr)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(io.greptime.v1.Ddl.CreateFlowTaskExpr other) {
-        if (other == io.greptime.v1.Ddl.CreateFlowTaskExpr.getDefaultInstance()) return this;
+      public Builder mergeFrom(io.greptime.v1.Ddl.CreateFlowExpr other) {
+        if (other == io.greptime.v1.Ddl.CreateFlowExpr.getDefaultInstance()) return this;
         if (!other.getCatalogName().isEmpty()) {
           catalogName_ = other.catalogName_;
           onChanged();
         }
-        if (!other.getTaskName().isEmpty()) {
-          taskName_ = other.taskName_;
+        if (!other.getFlowName().isEmpty()) {
+          flowName_ = other.flowName_;
           onChanged();
         }
         if (sourceTableNamesBuilder_ == null) {
@@ -3333,8 +3333,8 @@ public Builder mergeFrom(io.greptime.v1.Ddl.CreateFlowTaskExpr other) {
           sql_ = other.sql_;
           onChanged();
         }
-        internalGetMutableTaskOptions().mergeFrom(
-            other.internalGetTaskOptions());
+        internalGetMutableFlowOptions().mergeFrom(
+            other.internalGetFlowOptions());
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
         return this;
@@ -3350,11 +3350,11 @@ public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        io.greptime.v1.Ddl.CreateFlowTaskExpr parsedMessage = null;
+        io.greptime.v1.Ddl.CreateFlowExpr parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.greptime.v1.Ddl.CreateFlowTaskExpr) e.getUnfinishedMessage();
+          parsedMessage = (io.greptime.v1.Ddl.CreateFlowExpr) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
@@ -3441,78 +3441,78 @@ public Builder setCatalogNameBytes(
         return this;
       }
 
-      private java.lang.Object taskName_ = "";
+      private java.lang.Object flowName_ = "";
       /**
-       * <code>string task_name = 2;</code>
-       * @return The taskName.
+       * <code>string flow_name = 2;</code>
+       * @return The flowName.
        */
-      public java.lang.String getTaskName() {
-        java.lang.Object ref = taskName_;
+      public java.lang.String getFlowName() {
+        java.lang.Object ref = flowName_;
         if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
           java.lang.String s = bs.toStringUtf8();
-          taskName_ = s;
+          flowName_ = s;
           return s;
         } else {
           return (java.lang.String) ref;
         }
       }
       /**
-       * <code>string task_name = 2;</code>
-       * @return The bytes for taskName.
+       * <code>string flow_name = 2;</code>
+       * @return The bytes for flowName.
        */
       public com.google.protobuf.ByteString
-          getTaskNameBytes() {
-        java.lang.Object ref = taskName_;
+          getFlowNameBytes() {
+        java.lang.Object ref = flowName_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
                   (java.lang.String) ref);
-          taskName_ = b;
+          flowName_ = b;
           return b;
         } else {
           return (com.google.protobuf.ByteString) ref;
         }
       }
       /**
-       * <code>string task_name = 2;</code>
-       * @param value The taskName to set.
+       * <code>string flow_name = 2;</code>
+       * @param value The flowName to set.
        * @return This builder for chaining.
        */
-      public Builder setTaskName(
+      public Builder setFlowName(
           java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
   
-        taskName_ = value;
+        flowName_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>string task_name = 2;</code>
+       * <code>string flow_name = 2;</code>
        * @return This builder for chaining.
        */
-      public Builder clearTaskName() {
+      public Builder clearFlowName() {
         
-        taskName_ = getDefaultInstance().getTaskName();
+        flowName_ = getDefaultInstance().getFlowName();
         onChanged();
         return this;
       }
       /**
-       * <code>string task_name = 2;</code>
-       * @param value The bytes for taskName to set.
+       * <code>string flow_name = 2;</code>
+       * @param value The bytes for flowName to set.
        * @return This builder for chaining.
        */
-      public Builder setTaskNameBytes(
+      public Builder setFlowNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
   checkByteStringIsUtf8(value);
         
-        taskName_ = value;
+        flowName_ = value;
         onChanged();
         return this;
       }
@@ -4167,99 +4167,99 @@ public Builder setSqlBytes(
       }
 
       private com.google.protobuf.MapField<
-          java.lang.String, java.lang.String> taskOptions_;
+          java.lang.String, java.lang.String> flowOptions_;
       private com.google.protobuf.MapField<java.lang.String, java.lang.String>
-      internalGetTaskOptions() {
-        if (taskOptions_ == null) {
+      internalGetFlowOptions() {
+        if (flowOptions_ == null) {
           return com.google.protobuf.MapField.emptyMapField(
-              TaskOptionsDefaultEntryHolder.defaultEntry);
+              FlowOptionsDefaultEntryHolder.defaultEntry);
         }
-        return taskOptions_;
+        return flowOptions_;
       }
       private com.google.protobuf.MapField<java.lang.String, java.lang.String>
-      internalGetMutableTaskOptions() {
+      internalGetMutableFlowOptions() {
         onChanged();;
-        if (taskOptions_ == null) {
-          taskOptions_ = com.google.protobuf.MapField.newMapField(
-              TaskOptionsDefaultEntryHolder.defaultEntry);
+        if (flowOptions_ == null) {
+          flowOptions_ = com.google.protobuf.MapField.newMapField(
+              FlowOptionsDefaultEntryHolder.defaultEntry);
         }
-        if (!taskOptions_.isMutable()) {
-          taskOptions_ = taskOptions_.copy();
+        if (!flowOptions_.isMutable()) {
+          flowOptions_ = flowOptions_.copy();
         }
-        return taskOptions_;
+        return flowOptions_;
       }
 
-      public int getTaskOptionsCount() {
-        return internalGetTaskOptions().getMap().size();
+      public int getFlowOptionsCount() {
+        return internalGetFlowOptions().getMap().size();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
 
       @java.lang.Override
-      public boolean containsTaskOptions(
+      public boolean containsFlowOptions(
           java.lang.String key) {
         if (key == null) { throw new NullPointerException("map key"); }
-        return internalGetTaskOptions().getMap().containsKey(key);
+        return internalGetFlowOptions().getMap().containsKey(key);
       }
       /**
-       * Use {@link #getTaskOptionsMap()} instead.
+       * Use {@link #getFlowOptionsMap()} instead.
        */
       @java.lang.Override
       @java.lang.Deprecated
-      public java.util.Map<java.lang.String, java.lang.String> getTaskOptions() {
-        return getTaskOptionsMap();
+      public java.util.Map<java.lang.String, java.lang.String> getFlowOptions() {
+        return getFlowOptionsMap();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
       @java.lang.Override
 
-      public java.util.Map<java.lang.String, java.lang.String> getTaskOptionsMap() {
-        return internalGetTaskOptions().getMap();
+      public java.util.Map<java.lang.String, java.lang.String> getFlowOptionsMap() {
+        return internalGetFlowOptions().getMap();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
       @java.lang.Override
 
-      public java.lang.String getTaskOptionsOrDefault(
+      public java.lang.String getFlowOptionsOrDefault(
           java.lang.String key,
           java.lang.String defaultValue) {
         if (key == null) { throw new NullPointerException("map key"); }
         java.util.Map<java.lang.String, java.lang.String> map =
-            internalGetTaskOptions().getMap();
+            internalGetFlowOptions().getMap();
         return map.containsKey(key) ? map.get(key) : defaultValue;
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
       @java.lang.Override
 
-      public java.lang.String getTaskOptionsOrThrow(
+      public java.lang.String getFlowOptionsOrThrow(
           java.lang.String key) {
         if (key == null) { throw new NullPointerException("map key"); }
         java.util.Map<java.lang.String, java.lang.String> map =
-            internalGetTaskOptions().getMap();
+            internalGetFlowOptions().getMap();
         if (!map.containsKey(key)) {
           throw new java.lang.IllegalArgumentException();
         }
         return map.get(key);
       }
 
-      public Builder clearTaskOptions() {
-        internalGetMutableTaskOptions().getMutableMap()
+      public Builder clearFlowOptions() {
+        internalGetMutableFlowOptions().getMutableMap()
             .clear();
         return this;
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
 
-      public Builder removeTaskOptions(
+      public Builder removeFlowOptions(
           java.lang.String key) {
         if (key == null) { throw new NullPointerException("map key"); }
-        internalGetMutableTaskOptions().getMutableMap()
+        internalGetMutableFlowOptions().getMutableMap()
             .remove(key);
         return this;
       }
@@ -4268,13 +4268,13 @@ public Builder removeTaskOptions(
        */
       @java.lang.Deprecated
       public java.util.Map<java.lang.String, java.lang.String>
-      getMutableTaskOptions() {
-        return internalGetMutableTaskOptions().getMutableMap();
+      getMutableFlowOptions() {
+        return internalGetMutableFlowOptions().getMutableMap();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
-      public Builder putTaskOptions(
+      public Builder putFlowOptions(
           java.lang.String key,
           java.lang.String value) {
         if (key == null) { throw new NullPointerException("map key"); }
@@ -4282,17 +4282,17 @@ public Builder putTaskOptions(
   throw new NullPointerException("map value");
 }
 
-        internalGetMutableTaskOptions().getMutableMap()
+        internalGetMutableFlowOptions().getMutableMap()
             .put(key, value);
         return this;
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 10;</code>
+       * <code>map&lt;string, string&gt; flow_options = 10;</code>
        */
 
-      public Builder putAllTaskOptions(
+      public Builder putAllFlowOptions(
           java.util.Map<java.lang.String, java.lang.String> values) {
-        internalGetMutableTaskOptions().getMutableMap()
+        internalGetMutableFlowOptions().getMutableMap()
             .putAll(values);
         return this;
       }
@@ -4309,48 +4309,48 @@ public final Builder mergeUnknownFields(
       }
 
 
-      // @@protoc_insertion_point(builder_scope:greptime.v1.CreateFlowTaskExpr)
+      // @@protoc_insertion_point(builder_scope:greptime.v1.CreateFlowExpr)
     }
 
-    // @@protoc_insertion_point(class_scope:greptime.v1.CreateFlowTaskExpr)
-    private static final io.greptime.v1.Ddl.CreateFlowTaskExpr DEFAULT_INSTANCE;
+    // @@protoc_insertion_point(class_scope:greptime.v1.CreateFlowExpr)
+    private static final io.greptime.v1.Ddl.CreateFlowExpr DEFAULT_INSTANCE;
     static {
-      DEFAULT_INSTANCE = new io.greptime.v1.Ddl.CreateFlowTaskExpr();
+      DEFAULT_INSTANCE = new io.greptime.v1.Ddl.CreateFlowExpr();
     }
 
-    public static io.greptime.v1.Ddl.CreateFlowTaskExpr getDefaultInstance() {
+    public static io.greptime.v1.Ddl.CreateFlowExpr getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
-    private static final com.google.protobuf.Parser<CreateFlowTaskExpr>
-        PARSER = new com.google.protobuf.AbstractParser<CreateFlowTaskExpr>() {
+    private static final com.google.protobuf.Parser<CreateFlowExpr>
+        PARSER = new com.google.protobuf.AbstractParser<CreateFlowExpr>() {
       @java.lang.Override
-      public CreateFlowTaskExpr parsePartialFrom(
+      public CreateFlowExpr parsePartialFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws com.google.protobuf.InvalidProtocolBufferException {
-        return new CreateFlowTaskExpr(input, extensionRegistry);
+        return new CreateFlowExpr(input, extensionRegistry);
       }
     };
 
-    public static com.google.protobuf.Parser<CreateFlowTaskExpr> parser() {
+    public static com.google.protobuf.Parser<CreateFlowExpr> parser() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.protobuf.Parser<CreateFlowTaskExpr> getParserForType() {
+    public com.google.protobuf.Parser<CreateFlowExpr> getParserForType() {
       return PARSER;
     }
 
     @java.lang.Override
-    public io.greptime.v1.Ddl.CreateFlowTaskExpr getDefaultInstanceForType() {
+    public io.greptime.v1.Ddl.CreateFlowExpr getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
 
   }
 
-  public interface DropFlowTaskExprOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:greptime.v1.DropFlowTaskExpr)
+  public interface DropFlowExprOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.DropFlowExpr)
       com.google.protobuf.MessageOrBuilder {
 
     /**
@@ -4366,43 +4366,43 @@ public interface DropFlowTaskExprOrBuilder extends
         getCatalogNameBytes();
 
     /**
-     * <code>string task_name = 2;</code>
-     * @return The taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The flowName.
      */
-    java.lang.String getTaskName();
+    java.lang.String getFlowName();
     /**
-     * <code>string task_name = 2;</code>
-     * @return The bytes for taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The bytes for flowName.
      */
     com.google.protobuf.ByteString
-        getTaskNameBytes();
+        getFlowNameBytes();
   }
   /**
    * <pre>
-   * Remove a flow task.
+   * Drop a flow.
    * </pre>
    *
-   * Protobuf type {@code greptime.v1.DropFlowTaskExpr}
+   * Protobuf type {@code greptime.v1.DropFlowExpr}
    */
-  public static final class DropFlowTaskExpr extends
+  public static final class DropFlowExpr extends
       com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:greptime.v1.DropFlowTaskExpr)
-      DropFlowTaskExprOrBuilder {
+      // @@protoc_insertion_point(message_implements:greptime.v1.DropFlowExpr)
+      DropFlowExprOrBuilder {
   private static final long serialVersionUID = 0L;
-    // Use DropFlowTaskExpr.newBuilder() to construct.
-    private DropFlowTaskExpr(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    // Use DropFlowExpr.newBuilder() to construct.
+    private DropFlowExpr(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
     }
-    private DropFlowTaskExpr() {
+    private DropFlowExpr() {
       catalogName_ = "";
-      taskName_ = "";
+      flowName_ = "";
     }
 
     @java.lang.Override
     @SuppressWarnings({"unused"})
     protected java.lang.Object newInstance(
         UnusedPrivateParameter unused) {
-      return new DropFlowTaskExpr();
+      return new DropFlowExpr();
     }
 
     @java.lang.Override
@@ -4410,7 +4410,7 @@ protected java.lang.Object newInstance(
     getUnknownFields() {
       return this.unknownFields;
     }
-    private DropFlowTaskExpr(
+    private DropFlowExpr(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
@@ -4437,7 +4437,7 @@ private DropFlowTaskExpr(
             case 18: {
               java.lang.String s = input.readStringRequireUtf8();
 
-              taskName_ = s;
+              flowName_ = s;
               break;
             }
             default: {
@@ -4463,15 +4463,15 @@ private DropFlowTaskExpr(
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowTaskExpr_descriptor;
+      return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowExpr_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowTaskExpr_fieldAccessorTable
+      return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowExpr_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              io.greptime.v1.Ddl.DropFlowTaskExpr.class, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder.class);
+              io.greptime.v1.Ddl.DropFlowExpr.class, io.greptime.v1.Ddl.DropFlowExpr.Builder.class);
     }
 
     public static final int CATALOG_NAME_FIELD_NUMBER = 1;
@@ -4512,38 +4512,38 @@ public java.lang.String getCatalogName() {
       }
     }
 
-    public static final int TASK_NAME_FIELD_NUMBER = 2;
-    private volatile java.lang.Object taskName_;
+    public static final int FLOW_NAME_FIELD_NUMBER = 2;
+    private volatile java.lang.Object flowName_;
     /**
-     * <code>string task_name = 2;</code>
-     * @return The taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The flowName.
      */
     @java.lang.Override
-    public java.lang.String getTaskName() {
-      java.lang.Object ref = taskName_;
+    public java.lang.String getFlowName() {
+      java.lang.Object ref = flowName_;
       if (ref instanceof java.lang.String) {
         return (java.lang.String) ref;
       } else {
         com.google.protobuf.ByteString bs = 
             (com.google.protobuf.ByteString) ref;
         java.lang.String s = bs.toStringUtf8();
-        taskName_ = s;
+        flowName_ = s;
         return s;
       }
     }
     /**
-     * <code>string task_name = 2;</code>
-     * @return The bytes for taskName.
+     * <code>string flow_name = 2;</code>
+     * @return The bytes for flowName.
      */
     @java.lang.Override
     public com.google.protobuf.ByteString
-        getTaskNameBytes() {
-      java.lang.Object ref = taskName_;
+        getFlowNameBytes() {
+      java.lang.Object ref = flowName_;
       if (ref instanceof java.lang.String) {
         com.google.protobuf.ByteString b = 
             com.google.protobuf.ByteString.copyFromUtf8(
                 (java.lang.String) ref);
-        taskName_ = b;
+        flowName_ = b;
         return b;
       } else {
         return (com.google.protobuf.ByteString) ref;
@@ -4567,8 +4567,8 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(catalogName_)) {
         com.google.protobuf.GeneratedMessageV3.writeString(output, 1, catalogName_);
       }
-      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(taskName_)) {
-        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, taskName_);
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(flowName_)) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 2, flowName_);
       }
       unknownFields.writeTo(output);
     }
@@ -4582,8 +4582,8 @@ public int getSerializedSize() {
       if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(catalogName_)) {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, catalogName_);
       }
-      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(taskName_)) {
-        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, taskName_);
+      if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(flowName_)) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, flowName_);
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -4595,15 +4595,15 @@ public boolean equals(final java.lang.Object obj) {
       if (obj == this) {
        return true;
       }
-      if (!(obj instanceof io.greptime.v1.Ddl.DropFlowTaskExpr)) {
+      if (!(obj instanceof io.greptime.v1.Ddl.DropFlowExpr)) {
         return super.equals(obj);
       }
-      io.greptime.v1.Ddl.DropFlowTaskExpr other = (io.greptime.v1.Ddl.DropFlowTaskExpr) obj;
+      io.greptime.v1.Ddl.DropFlowExpr other = (io.greptime.v1.Ddl.DropFlowExpr) obj;
 
       if (!getCatalogName()
           .equals(other.getCatalogName())) return false;
-      if (!getTaskName()
-          .equals(other.getTaskName())) return false;
+      if (!getFlowName()
+          .equals(other.getFlowName())) return false;
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
     }
@@ -4617,76 +4617,76 @@ public int hashCode() {
       hash = (19 * hash) + getDescriptor().hashCode();
       hash = (37 * hash) + CATALOG_NAME_FIELD_NUMBER;
       hash = (53 * hash) + getCatalogName().hashCode();
-      hash = (37 * hash) + TASK_NAME_FIELD_NUMBER;
-      hash = (53 * hash) + getTaskName().hashCode();
+      hash = (37 * hash) + FLOW_NAME_FIELD_NUMBER;
+      hash = (53 * hash) + getFlowName().hashCode();
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
     }
 
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         java.nio.ByteBuffer data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         java.nio.ByteBuffer data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(byte[] data)
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(java.io.InputStream input)
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseDelimitedFrom(java.io.InputStream input)
+    public static io.greptime.v1.Ddl.DropFlowExpr parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseDelimitedFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
+    public static io.greptime.v1.Ddl.DropFlowExpr parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
@@ -4699,7 +4699,7 @@ public static io.greptime.v1.Ddl.DropFlowTaskExpr parseFrom(
     public static Builder newBuilder() {
       return DEFAULT_INSTANCE.toBuilder();
     }
-    public static Builder newBuilder(io.greptime.v1.Ddl.DropFlowTaskExpr prototype) {
+    public static Builder newBuilder(io.greptime.v1.Ddl.DropFlowExpr prototype) {
       return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
     }
     @java.lang.Override
@@ -4716,29 +4716,29 @@ protected Builder newBuilderForType(
     }
     /**
      * <pre>
-     * Remove a flow task.
+     * Drop a flow.
      * </pre>
      *
-     * Protobuf type {@code greptime.v1.DropFlowTaskExpr}
+     * Protobuf type {@code greptime.v1.DropFlowExpr}
      */
     public static final class Builder extends
         com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:greptime.v1.DropFlowTaskExpr)
-        io.greptime.v1.Ddl.DropFlowTaskExprOrBuilder {
+        // @@protoc_insertion_point(builder_implements:greptime.v1.DropFlowExpr)
+        io.greptime.v1.Ddl.DropFlowExprOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowTaskExpr_descriptor;
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowExpr_descriptor;
       }
 
       @java.lang.Override
       protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowTaskExpr_fieldAccessorTable
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowExpr_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                io.greptime.v1.Ddl.DropFlowTaskExpr.class, io.greptime.v1.Ddl.DropFlowTaskExpr.Builder.class);
+                io.greptime.v1.Ddl.DropFlowExpr.class, io.greptime.v1.Ddl.DropFlowExpr.Builder.class);
       }
 
-      // Construct using io.greptime.v1.Ddl.DropFlowTaskExpr.newBuilder()
+      // Construct using io.greptime.v1.Ddl.DropFlowExpr.newBuilder()
       private Builder() {
         maybeForceBuilderInitialization();
       }
@@ -4758,7 +4758,7 @@ public Builder clear() {
         super.clear();
         catalogName_ = "";
 
-        taskName_ = "";
+        flowName_ = "";
 
         return this;
       }
@@ -4766,17 +4766,17 @@ public Builder clear() {
       @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowTaskExpr_descriptor;
+        return io.greptime.v1.Ddl.internal_static_greptime_v1_DropFlowExpr_descriptor;
       }
 
       @java.lang.Override
-      public io.greptime.v1.Ddl.DropFlowTaskExpr getDefaultInstanceForType() {
-        return io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance();
+      public io.greptime.v1.Ddl.DropFlowExpr getDefaultInstanceForType() {
+        return io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance();
       }
 
       @java.lang.Override
-      public io.greptime.v1.Ddl.DropFlowTaskExpr build() {
-        io.greptime.v1.Ddl.DropFlowTaskExpr result = buildPartial();
+      public io.greptime.v1.Ddl.DropFlowExpr build() {
+        io.greptime.v1.Ddl.DropFlowExpr result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
@@ -4784,10 +4784,10 @@ public io.greptime.v1.Ddl.DropFlowTaskExpr build() {
       }
 
       @java.lang.Override
-      public io.greptime.v1.Ddl.DropFlowTaskExpr buildPartial() {
-        io.greptime.v1.Ddl.DropFlowTaskExpr result = new io.greptime.v1.Ddl.DropFlowTaskExpr(this);
+      public io.greptime.v1.Ddl.DropFlowExpr buildPartial() {
+        io.greptime.v1.Ddl.DropFlowExpr result = new io.greptime.v1.Ddl.DropFlowExpr(this);
         result.catalogName_ = catalogName_;
-        result.taskName_ = taskName_;
+        result.flowName_ = flowName_;
         onBuilt();
         return result;
       }
@@ -4826,22 +4826,22 @@ public Builder addRepeatedField(
       }
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof io.greptime.v1.Ddl.DropFlowTaskExpr) {
-          return mergeFrom((io.greptime.v1.Ddl.DropFlowTaskExpr)other);
+        if (other instanceof io.greptime.v1.Ddl.DropFlowExpr) {
+          return mergeFrom((io.greptime.v1.Ddl.DropFlowExpr)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(io.greptime.v1.Ddl.DropFlowTaskExpr other) {
-        if (other == io.greptime.v1.Ddl.DropFlowTaskExpr.getDefaultInstance()) return this;
+      public Builder mergeFrom(io.greptime.v1.Ddl.DropFlowExpr other) {
+        if (other == io.greptime.v1.Ddl.DropFlowExpr.getDefaultInstance()) return this;
         if (!other.getCatalogName().isEmpty()) {
           catalogName_ = other.catalogName_;
           onChanged();
         }
-        if (!other.getTaskName().isEmpty()) {
-          taskName_ = other.taskName_;
+        if (!other.getFlowName().isEmpty()) {
+          flowName_ = other.flowName_;
           onChanged();
         }
         this.mergeUnknownFields(other.unknownFields);
@@ -4859,11 +4859,11 @@ public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        io.greptime.v1.Ddl.DropFlowTaskExpr parsedMessage = null;
+        io.greptime.v1.Ddl.DropFlowExpr parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.greptime.v1.Ddl.DropFlowTaskExpr) e.getUnfinishedMessage();
+          parsedMessage = (io.greptime.v1.Ddl.DropFlowExpr) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
@@ -4949,78 +4949,78 @@ public Builder setCatalogNameBytes(
         return this;
       }
 
-      private java.lang.Object taskName_ = "";
+      private java.lang.Object flowName_ = "";
       /**
-       * <code>string task_name = 2;</code>
-       * @return The taskName.
+       * <code>string flow_name = 2;</code>
+       * @return The flowName.
        */
-      public java.lang.String getTaskName() {
-        java.lang.Object ref = taskName_;
+      public java.lang.String getFlowName() {
+        java.lang.Object ref = flowName_;
         if (!(ref instanceof java.lang.String)) {
           com.google.protobuf.ByteString bs =
               (com.google.protobuf.ByteString) ref;
           java.lang.String s = bs.toStringUtf8();
-          taskName_ = s;
+          flowName_ = s;
           return s;
         } else {
           return (java.lang.String) ref;
         }
       }
       /**
-       * <code>string task_name = 2;</code>
-       * @return The bytes for taskName.
+       * <code>string flow_name = 2;</code>
+       * @return The bytes for flowName.
        */
       public com.google.protobuf.ByteString
-          getTaskNameBytes() {
-        java.lang.Object ref = taskName_;
+          getFlowNameBytes() {
+        java.lang.Object ref = flowName_;
         if (ref instanceof String) {
           com.google.protobuf.ByteString b = 
               com.google.protobuf.ByteString.copyFromUtf8(
                   (java.lang.String) ref);
-          taskName_ = b;
+          flowName_ = b;
           return b;
         } else {
           return (com.google.protobuf.ByteString) ref;
         }
       }
       /**
-       * <code>string task_name = 2;</code>
-       * @param value The taskName to set.
+       * <code>string flow_name = 2;</code>
+       * @param value The flowName to set.
        * @return This builder for chaining.
        */
-      public Builder setTaskName(
+      public Builder setFlowName(
           java.lang.String value) {
         if (value == null) {
     throw new NullPointerException();
   }
   
-        taskName_ = value;
+        flowName_ = value;
         onChanged();
         return this;
       }
       /**
-       * <code>string task_name = 2;</code>
+       * <code>string flow_name = 2;</code>
        * @return This builder for chaining.
        */
-      public Builder clearTaskName() {
+      public Builder clearFlowName() {
         
-        taskName_ = getDefaultInstance().getTaskName();
+        flowName_ = getDefaultInstance().getFlowName();
         onChanged();
         return this;
       }
       /**
-       * <code>string task_name = 2;</code>
-       * @param value The bytes for taskName to set.
+       * <code>string flow_name = 2;</code>
+       * @param value The bytes for flowName to set.
        * @return This builder for chaining.
        */
-      public Builder setTaskNameBytes(
+      public Builder setFlowNameBytes(
           com.google.protobuf.ByteString value) {
         if (value == null) {
     throw new NullPointerException();
   }
   checkByteStringIsUtf8(value);
         
-        taskName_ = value;
+        flowName_ = value;
         onChanged();
         return this;
       }
@@ -5037,41 +5037,41 @@ public final Builder mergeUnknownFields(
       }
 
 
-      // @@protoc_insertion_point(builder_scope:greptime.v1.DropFlowTaskExpr)
+      // @@protoc_insertion_point(builder_scope:greptime.v1.DropFlowExpr)
     }
 
-    // @@protoc_insertion_point(class_scope:greptime.v1.DropFlowTaskExpr)
-    private static final io.greptime.v1.Ddl.DropFlowTaskExpr DEFAULT_INSTANCE;
+    // @@protoc_insertion_point(class_scope:greptime.v1.DropFlowExpr)
+    private static final io.greptime.v1.Ddl.DropFlowExpr DEFAULT_INSTANCE;
     static {
-      DEFAULT_INSTANCE = new io.greptime.v1.Ddl.DropFlowTaskExpr();
+      DEFAULT_INSTANCE = new io.greptime.v1.Ddl.DropFlowExpr();
     }
 
-    public static io.greptime.v1.Ddl.DropFlowTaskExpr getDefaultInstance() {
+    public static io.greptime.v1.Ddl.DropFlowExpr getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
-    private static final com.google.protobuf.Parser<DropFlowTaskExpr>
-        PARSER = new com.google.protobuf.AbstractParser<DropFlowTaskExpr>() {
+    private static final com.google.protobuf.Parser<DropFlowExpr>
+        PARSER = new com.google.protobuf.AbstractParser<DropFlowExpr>() {
       @java.lang.Override
-      public DropFlowTaskExpr parsePartialFrom(
+      public DropFlowExpr parsePartialFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws com.google.protobuf.InvalidProtocolBufferException {
-        return new DropFlowTaskExpr(input, extensionRegistry);
+        return new DropFlowExpr(input, extensionRegistry);
       }
     };
 
-    public static com.google.protobuf.Parser<DropFlowTaskExpr> parser() {
+    public static com.google.protobuf.Parser<DropFlowExpr> parser() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.protobuf.Parser<DropFlowTaskExpr> getParserForType() {
+    public com.google.protobuf.Parser<DropFlowExpr> getParserForType() {
       return PARSER;
     }
 
     @java.lang.Override
-    public io.greptime.v1.Ddl.DropFlowTaskExpr getDefaultInstanceForType() {
+    public io.greptime.v1.Ddl.DropFlowExpr getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
 
@@ -21424,20 +21424,20 @@ public io.greptime.v1.Ddl.AddColumnLocation getDefaultInstanceForType() {
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_DdlRequest_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_CreateFlowTaskExpr_descriptor;
+    internal_static_greptime_v1_CreateFlowExpr_descriptor;
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_CreateFlowTaskExpr_fieldAccessorTable;
+      internal_static_greptime_v1_CreateFlowExpr_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_CreateFlowTaskExpr_TaskOptionsEntry_descriptor;
+    internal_static_greptime_v1_CreateFlowExpr_FlowOptionsEntry_descriptor;
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_CreateFlowTaskExpr_TaskOptionsEntry_fieldAccessorTable;
+      internal_static_greptime_v1_CreateFlowExpr_FlowOptionsEntry_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_DropFlowTaskExpr_descriptor;
+    internal_static_greptime_v1_DropFlowExpr_descriptor;
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_DropFlowTaskExpr_fieldAccessorTable;
+      internal_static_greptime_v1_DropFlowExpr_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_CreateTableExpr_descriptor;
   private static final 
@@ -21538,86 +21538,85 @@ public io.greptime.v1.Ddl.AddColumnLocation getDefaultInstanceForType() {
   static {
     java.lang.String[] descriptorData = {
       "\n\025greptime/v1/ddl.proto\022\013greptime.v1\032\030gr" +
-      "eptime/v1/common.proto\"\221\003\n\nDdlRequest\022:\n" +
+      "eptime/v1/common.proto\"\377\002\n\nDdlRequest\022:\n" +
       "\017create_database\030\001 \001(\0132\037.greptime.v1.Cre" +
       "ateDatabaseExprH\000\0224\n\014create_table\030\002 \001(\0132" +
       "\034.greptime.v1.CreateTableExprH\000\022\'\n\005alter" +
       "\030\003 \001(\0132\026.greptime.v1.AlterExprH\000\0220\n\ndrop" +
       "_table\030\004 \001(\0132\032.greptime.v1.DropTableExpr" +
       "H\000\0228\n\016truncate_table\030\007 \001(\0132\036.greptime.v1" +
-      ".TruncateTableExprH\000\022;\n\020create_flow_task" +
-      "\030\010 \001(\0132\037.greptime.v1.CreateFlowTaskExprH" +
-      "\000\0227\n\016drop_flow_task\030\t \001(\0132\035.greptime.v1." +
-      "DropFlowTaskExprH\000B\006\n\004expr\"\203\003\n\022CreateFlo" +
-      "wTaskExpr\022\024\n\014catalog_name\030\001 \001(\t\022\021\n\ttask_" +
-      "name\030\002 \001(\t\0222\n\022source_table_names\030\003 \003(\0132\026" +
-      ".greptime.v1.TableName\022/\n\017sink_table_nam" +
-      "e\030\004 \001(\0132\026.greptime.v1.TableName\022\022\n\nor_re" +
-      "place\030\005 \001(\010\022\034\n\024create_if_not_exists\030\006 \001(" +
-      "\010\022\023\n\013expire_when\030\007 \001(\t\022\017\n\007comment\030\010 \001(\t\022" +
-      "\013\n\003sql\030\t \001(\t\022F\n\014task_options\030\n \003(\01320.gre" +
-      "ptime.v1.CreateFlowTaskExpr.TaskOptionsE" +
-      "ntry\0322\n\020TaskOptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n" +
-      "\005value\030\002 \001(\t:\0028\001\";\n\020DropFlowTaskExpr\022\024\n\014" +
-      "catalog_name\030\001 \001(\t\022\021\n\ttask_name\030\002 \001(\t\"\207\003" +
-      "\n\017CreateTableExpr\022\024\n\014catalog_name\030\001 \001(\t\022" +
-      "\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_name\030\003 \001(\t" +
-      "\022\014\n\004desc\030\004 \001(\t\022+\n\013column_defs\030\005 \003(\0132\026.gr" +
-      "eptime.v1.ColumnDef\022\022\n\ntime_index\030\006 \001(\t\022" +
-      "\024\n\014primary_keys\030\007 \003(\t\022\034\n\024create_if_not_e" +
-      "xists\030\010 \001(\010\022E\n\rtable_options\030\t \003(\0132..gre" +
-      "ptime.v1.CreateTableExpr.TableOptionsEnt" +
-      "ry\022&\n\010table_id\030\n \001(\0132\024.greptime.v1.Table" +
-      "Id\022\016\n\006engine\030\014 \001(\t\0323\n\021TableOptionsEntry\022" +
-      "\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\245\002\n\tAlte" +
-      "rExpr\022\024\n\014catalog_name\030\001 \001(\t\022\023\n\013schema_na" +
-      "me\030\002 \001(\t\022\022\n\ntable_name\030\003 \001(\t\022.\n\013add_colu" +
-      "mns\030\004 \001(\0132\027.greptime.v1.AddColumnsH\000\0220\n\014" +
-      "drop_columns\030\005 \001(\0132\030.greptime.v1.DropCol" +
-      "umnsH\000\0220\n\014rename_table\030\006 \001(\0132\030.greptime." +
-      "v1.RenameTableH\000\022=\n\023change_column_types\030" +
-      "\007 \001(\0132\036.greptime.v1.ChangeColumnTypesH\000B" +
-      "\006\n\004kind\"\216\001\n\rDropTableExpr\022\024\n\014catalog_nam" +
-      "e\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_na" +
-      "me\030\003 \001(\t\022&\n\010table_id\030\004 \001(\0132\024.greptime.v1" +
-      ".TableId\022\026\n\016drop_if_exists\030\005 \001(\010\"\314\001\n\022Cre" +
-      "ateDatabaseExpr\022\024\n\014catalog_name\030\001 \001(\t\022\023\n" +
-      "\013schema_name\030\002 \001(\t\022\034\n\024create_if_not_exis" +
-      "ts\030\003 \001(\010\022=\n\007options\030\004 \003(\0132,.greptime.v1." +
-      "CreateDatabaseExpr.OptionsEntry\032.\n\014Optio" +
-      "nsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"" +
-      "z\n\021TruncateTableExpr\022\024\n\014catalog_name\030\001 \001" +
-      "(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_name\030\003 " +
-      "\001(\t\022&\n\010table_id\030\004 \001(\0132\024.greptime.v1.Tabl" +
-      "eId\"U\n\020DropDatabaseExpr\022\024\n\014catalog_name\030" +
-      "\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\026\n\016drop_if_ex" +
-      "ists\030\003 \001(\010\"9\n\nAddColumns\022+\n\013add_columns\030" +
-      "\001 \003(\0132\026.greptime.v1.AddColumn\"<\n\013DropCol" +
-      "umns\022-\n\014drop_columns\030\001 \003(\0132\027.greptime.v1" +
-      ".DropColumn\"O\n\021ChangeColumnTypes\022:\n\023chan" +
-      "ge_column_types\030\001 \003(\0132\035.greptime.v1.Chan" +
-      "geColumnType\"%\n\013RenameTable\022\026\n\016new_table" +
-      "_name\030\001 \001(\t\"i\n\tAddColumn\022*\n\ncolumn_def\030\001" +
-      " \001(\0132\026.greptime.v1.ColumnDef\0220\n\010location" +
-      "\030\003 \001(\0132\036.greptime.v1.AddColumnLocation\"\236" +
-      "\001\n\020ChangeColumnType\022\023\n\013column_name\030\001 \001(\t" +
-      "\0220\n\013target_type\030\002 \001(\0162\033.greptime.v1.Colu" +
-      "mnDataType\022C\n\025target_type_extension\030\003 \001(" +
-      "\0132$.greptime.v1.ColumnDataTypeExtension\"" +
-      "\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"\025\n\007TableId\022\n" +
-      "\n\002id\030\001 \001(\r\"\377\001\n\tColumnDef\022\014\n\004name\030\001 \001(\t\022." +
-      "\n\tdata_type\030\002 \001(\0162\033.greptime.v1.ColumnDa" +
-      "taType\022\023\n\013is_nullable\030\003 \001(\010\022\032\n\022default_c" +
-      "onstraint\030\004 \001(\014\0220\n\rsemantic_type\030\005 \001(\0162\031" +
-      ".greptime.v1.SemanticType\022\017\n\007comment\030\006 \001" +
-      "(\t\022@\n\022datatype_extension\030\007 \001(\0132$.greptim" +
-      "e.v1.ColumnDataTypeExtension\"\230\001\n\021AddColu" +
-      "mnLocation\022B\n\rlocation_type\030\001 \001(\0162+.grep" +
-      "time.v1.AddColumnLocation.LocationType\022\031" +
-      "\n\021after_column_name\030\002 \001(\t\"$\n\014LocationTyp" +
-      "e\022\t\n\005FIRST\020\000\022\t\n\005AFTER\020\001BL\n\016io.greptime.v" +
-      "1B\003DdlZ5github.com/GreptimeTeam/greptime" +
-      "-proto/go/greptime/v1b\006proto3"
+      ".TruncateTableExprH\000\0222\n\013create_flow\030\010 \001(" +
+      "\0132\033.greptime.v1.CreateFlowExprH\000\022.\n\tdrop" +
+      "_flow\030\t \001(\0132\031.greptime.v1.DropFlowExprH\000" +
+      "B\006\n\004expr\"\373\002\n\016CreateFlowExpr\022\024\n\014catalog_n" +
+      "ame\030\001 \001(\t\022\021\n\tflow_name\030\002 \001(\t\0222\n\022source_t" +
+      "able_names\030\003 \003(\0132\026.greptime.v1.TableName" +
+      "\022/\n\017sink_table_name\030\004 \001(\0132\026.greptime.v1." +
+      "TableName\022\022\n\nor_replace\030\005 \001(\010\022\034\n\024create_" +
+      "if_not_exists\030\006 \001(\010\022\023\n\013expire_when\030\007 \001(\t" +
+      "\022\017\n\007comment\030\010 \001(\t\022\013\n\003sql\030\t \001(\t\022B\n\014flow_o" +
+      "ptions\030\n \003(\0132,.greptime.v1.CreateFlowExp" +
+      "r.FlowOptionsEntry\0322\n\020FlowOptionsEntry\022\013" +
+      "\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"7\n\014DropFl" +
+      "owExpr\022\024\n\014catalog_name\030\001 \001(\t\022\021\n\tflow_nam" +
+      "e\030\002 \001(\t\"\207\003\n\017CreateTableExpr\022\024\n\014catalog_n" +
+      "ame\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntable_" +
+      "name\030\003 \001(\t\022\014\n\004desc\030\004 \001(\t\022+\n\013column_defs\030" +
+      "\005 \003(\0132\026.greptime.v1.ColumnDef\022\022\n\ntime_in" +
+      "dex\030\006 \001(\t\022\024\n\014primary_keys\030\007 \003(\t\022\034\n\024creat" +
+      "e_if_not_exists\030\010 \001(\010\022E\n\rtable_options\030\t" +
+      " \003(\0132..greptime.v1.CreateTableExpr.Table" +
+      "OptionsEntry\022&\n\010table_id\030\n \001(\0132\024.greptim" +
+      "e.v1.TableId\022\016\n\006engine\030\014 \001(\t\0323\n\021TableOpt" +
+      "ionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028" +
+      "\001\"\245\002\n\tAlterExpr\022\024\n\014catalog_name\030\001 \001(\t\022\023\n" +
+      "\013schema_name\030\002 \001(\t\022\022\n\ntable_name\030\003 \001(\t\022." +
+      "\n\013add_columns\030\004 \001(\0132\027.greptime.v1.AddCol" +
+      "umnsH\000\0220\n\014drop_columns\030\005 \001(\0132\030.greptime." +
+      "v1.DropColumnsH\000\0220\n\014rename_table\030\006 \001(\0132\030" +
+      ".greptime.v1.RenameTableH\000\022=\n\023change_col" +
+      "umn_types\030\007 \001(\0132\036.greptime.v1.ChangeColu" +
+      "mnTypesH\000B\006\n\004kind\"\216\001\n\rDropTableExpr\022\024\n\014c" +
+      "atalog_name\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022" +
+      "\n\ntable_name\030\003 \001(\t\022&\n\010table_id\030\004 \001(\0132\024.g" +
+      "reptime.v1.TableId\022\026\n\016drop_if_exists\030\005 \001" +
+      "(\010\"\314\001\n\022CreateDatabaseExpr\022\024\n\014catalog_nam" +
+      "e\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\034\n\024create_i" +
+      "f_not_exists\030\003 \001(\010\022=\n\007options\030\004 \003(\0132,.gr" +
+      "eptime.v1.CreateDatabaseExpr.OptionsEntr" +
+      "y\032.\n\014OptionsEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030" +
+      "\002 \001(\t:\0028\001\"z\n\021TruncateTableExpr\022\024\n\014catalo" +
+      "g_name\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\022\n\ntab" +
+      "le_name\030\003 \001(\t\022&\n\010table_id\030\004 \001(\0132\024.grepti" +
+      "me.v1.TableId\"U\n\020DropDatabaseExpr\022\024\n\014cat" +
+      "alog_name\030\001 \001(\t\022\023\n\013schema_name\030\002 \001(\t\022\026\n\016" +
+      "drop_if_exists\030\003 \001(\010\"9\n\nAddColumns\022+\n\013ad" +
+      "d_columns\030\001 \003(\0132\026.greptime.v1.AddColumn\"" +
+      "<\n\013DropColumns\022-\n\014drop_columns\030\001 \003(\0132\027.g" +
+      "reptime.v1.DropColumn\"O\n\021ChangeColumnTyp" +
+      "es\022:\n\023change_column_types\030\001 \003(\0132\035.grepti" +
+      "me.v1.ChangeColumnType\"%\n\013RenameTable\022\026\n" +
+      "\016new_table_name\030\001 \001(\t\"i\n\tAddColumn\022*\n\nco" +
+      "lumn_def\030\001 \001(\0132\026.greptime.v1.ColumnDef\0220" +
+      "\n\010location\030\003 \001(\0132\036.greptime.v1.AddColumn" +
+      "Location\"\236\001\n\020ChangeColumnType\022\023\n\013column_" +
+      "name\030\001 \001(\t\0220\n\013target_type\030\002 \001(\0162\033.grepti" +
+      "me.v1.ColumnDataType\022C\n\025target_type_exte" +
+      "nsion\030\003 \001(\0132$.greptime.v1.ColumnDataType" +
+      "Extension\"\032\n\nDropColumn\022\014\n\004name\030\001 \001(\t\"\025\n" +
+      "\007TableId\022\n\n\002id\030\001 \001(\r\"\377\001\n\tColumnDef\022\014\n\004na" +
+      "me\030\001 \001(\t\022.\n\tdata_type\030\002 \001(\0162\033.greptime.v" +
+      "1.ColumnDataType\022\023\n\013is_nullable\030\003 \001(\010\022\032\n" +
+      "\022default_constraint\030\004 \001(\014\0220\n\rsemantic_ty" +
+      "pe\030\005 \001(\0162\031.greptime.v1.SemanticType\022\017\n\007c" +
+      "omment\030\006 \001(\t\022@\n\022datatype_extension\030\007 \001(\013" +
+      "2$.greptime.v1.ColumnDataTypeExtension\"\230" +
+      "\001\n\021AddColumnLocation\022B\n\rlocation_type\030\001 " +
+      "\001(\0162+.greptime.v1.AddColumnLocation.Loca" +
+      "tionType\022\031\n\021after_column_name\030\002 \001(\t\"$\n\014L" +
+      "ocationType\022\t\n\005FIRST\020\000\022\t\n\005AFTER\020\001BL\n\016io." +
+      "greptime.v1B\003DdlZ5github.com/GreptimeTea" +
+      "m/greptime-proto/go/greptime/v1b\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -21629,25 +21628,25 @@ public io.greptime.v1.Ddl.AddColumnLocation getDefaultInstanceForType() {
     internal_static_greptime_v1_DdlRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_DdlRequest_descriptor,
-        new java.lang.String[] { "CreateDatabase", "CreateTable", "Alter", "DropTable", "TruncateTable", "CreateFlowTask", "DropFlowTask", "Expr", });
-    internal_static_greptime_v1_CreateFlowTaskExpr_descriptor =
+        new java.lang.String[] { "CreateDatabase", "CreateTable", "Alter", "DropTable", "TruncateTable", "CreateFlow", "DropFlow", "Expr", });
+    internal_static_greptime_v1_CreateFlowExpr_descriptor =
       getDescriptor().getMessageTypes().get(1);
-    internal_static_greptime_v1_CreateFlowTaskExpr_fieldAccessorTable = new
+    internal_static_greptime_v1_CreateFlowExpr_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_CreateFlowTaskExpr_descriptor,
-        new java.lang.String[] { "CatalogName", "TaskName", "SourceTableNames", "SinkTableName", "OrReplace", "CreateIfNotExists", "ExpireWhen", "Comment", "Sql", "TaskOptions", });
-    internal_static_greptime_v1_CreateFlowTaskExpr_TaskOptionsEntry_descriptor =
-      internal_static_greptime_v1_CreateFlowTaskExpr_descriptor.getNestedTypes().get(0);
-    internal_static_greptime_v1_CreateFlowTaskExpr_TaskOptionsEntry_fieldAccessorTable = new
+        internal_static_greptime_v1_CreateFlowExpr_descriptor,
+        new java.lang.String[] { "CatalogName", "FlowName", "SourceTableNames", "SinkTableName", "OrReplace", "CreateIfNotExists", "ExpireWhen", "Comment", "Sql", "FlowOptions", });
+    internal_static_greptime_v1_CreateFlowExpr_FlowOptionsEntry_descriptor =
+      internal_static_greptime_v1_CreateFlowExpr_descriptor.getNestedTypes().get(0);
+    internal_static_greptime_v1_CreateFlowExpr_FlowOptionsEntry_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_CreateFlowTaskExpr_TaskOptionsEntry_descriptor,
+        internal_static_greptime_v1_CreateFlowExpr_FlowOptionsEntry_descriptor,
         new java.lang.String[] { "Key", "Value", });
-    internal_static_greptime_v1_DropFlowTaskExpr_descriptor =
+    internal_static_greptime_v1_DropFlowExpr_descriptor =
       getDescriptor().getMessageTypes().get(2);
-    internal_static_greptime_v1_DropFlowTaskExpr_fieldAccessorTable = new
+    internal_static_greptime_v1_DropFlowExpr_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_DropFlowTaskExpr_descriptor,
-        new java.lang.String[] { "CatalogName", "TaskName", });
+        internal_static_greptime_v1_DropFlowExpr_descriptor,
+        new java.lang.String[] { "CatalogName", "FlowName", });
     internal_static_greptime_v1_CreateTableExpr_descriptor =
       getDescriptor().getMessageTypes().get(3);
     internal_static_greptime_v1_CreateTableExpr_fieldAccessorTable = new
diff --git a/java/src/main/java/io/greptime/v1/flow/Server.java b/java/src/main/java/io/greptime/v1/flow/Server.java
index 73f14282..fcb895fa 100644
--- a/java/src/main/java/io/greptime/v1/flow/Server.java
+++ b/java/src/main/java/io/greptime/v1/flow/Server.java
@@ -1523,19 +1523,19 @@ public interface FlowRequestOrBuilder extends
     io.greptime.v1.flow.Server.CreateRequestOrBuilder getCreateOrBuilder();
 
     /**
-     * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
-     * @return Whether the remove field is set.
+     * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
+     * @return Whether the drop field is set.
      */
-    boolean hasRemove();
+    boolean hasDrop();
     /**
-     * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
-     * @return The remove.
+     * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
+     * @return The drop.
      */
-    io.greptime.v1.flow.Server.RemoveRequest getRemove();
+    io.greptime.v1.flow.Server.DropRequest getDrop();
     /**
-     * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+     * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
      */
-    io.greptime.v1.flow.Server.RemoveRequestOrBuilder getRemoveOrBuilder();
+    io.greptime.v1.flow.Server.DropRequestOrBuilder getDropOrBuilder();
 
     public io.greptime.v1.flow.Server.FlowRequest.BodyCase getBodyCase();
   }
@@ -1599,14 +1599,14 @@ private FlowRequest(
               break;
             }
             case 18: {
-              io.greptime.v1.flow.Server.RemoveRequest.Builder subBuilder = null;
+              io.greptime.v1.flow.Server.DropRequest.Builder subBuilder = null;
               if (bodyCase_ == 2) {
-                subBuilder = ((io.greptime.v1.flow.Server.RemoveRequest) body_).toBuilder();
+                subBuilder = ((io.greptime.v1.flow.Server.DropRequest) body_).toBuilder();
               }
               body_ =
-                  input.readMessage(io.greptime.v1.flow.Server.RemoveRequest.parser(), extensionRegistry);
+                  input.readMessage(io.greptime.v1.flow.Server.DropRequest.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom((io.greptime.v1.flow.Server.RemoveRequest) body_);
+                subBuilder.mergeFrom((io.greptime.v1.flow.Server.DropRequest) body_);
                 body_ = subBuilder.buildPartial();
               }
               bodyCase_ = 2;
@@ -1652,7 +1652,7 @@ public enum BodyCase
         implements com.google.protobuf.Internal.EnumLite,
             com.google.protobuf.AbstractMessage.InternalOneOfEnum {
       CREATE(1),
-      REMOVE(2),
+      DROP(2),
       BODY_NOT_SET(0);
       private final int value;
       private BodyCase(int value) {
@@ -1671,7 +1671,7 @@ public static BodyCase valueOf(int value) {
       public static BodyCase forNumber(int value) {
         switch (value) {
           case 1: return CREATE;
-          case 2: return REMOVE;
+          case 2: return DROP;
           case 0: return BODY_NOT_SET;
           default: return null;
         }
@@ -1718,35 +1718,35 @@ public io.greptime.v1.flow.Server.CreateRequestOrBuilder getCreateOrBuilder() {
       return io.greptime.v1.flow.Server.CreateRequest.getDefaultInstance();
     }
 
-    public static final int REMOVE_FIELD_NUMBER = 2;
+    public static final int DROP_FIELD_NUMBER = 2;
     /**
-     * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
-     * @return Whether the remove field is set.
+     * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
+     * @return Whether the drop field is set.
      */
     @java.lang.Override
-    public boolean hasRemove() {
+    public boolean hasDrop() {
       return bodyCase_ == 2;
     }
     /**
-     * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
-     * @return The remove.
+     * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
+     * @return The drop.
      */
     @java.lang.Override
-    public io.greptime.v1.flow.Server.RemoveRequest getRemove() {
+    public io.greptime.v1.flow.Server.DropRequest getDrop() {
       if (bodyCase_ == 2) {
-         return (io.greptime.v1.flow.Server.RemoveRequest) body_;
+         return (io.greptime.v1.flow.Server.DropRequest) body_;
       }
-      return io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+      return io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
     }
     /**
-     * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+     * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.flow.Server.RemoveRequestOrBuilder getRemoveOrBuilder() {
+    public io.greptime.v1.flow.Server.DropRequestOrBuilder getDropOrBuilder() {
       if (bodyCase_ == 2) {
-         return (io.greptime.v1.flow.Server.RemoveRequest) body_;
+         return (io.greptime.v1.flow.Server.DropRequest) body_;
       }
-      return io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+      return io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
     }
 
     private byte memoizedIsInitialized = -1;
@@ -1767,7 +1767,7 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
         output.writeMessage(1, (io.greptime.v1.flow.Server.CreateRequest) body_);
       }
       if (bodyCase_ == 2) {
-        output.writeMessage(2, (io.greptime.v1.flow.Server.RemoveRequest) body_);
+        output.writeMessage(2, (io.greptime.v1.flow.Server.DropRequest) body_);
       }
       unknownFields.writeTo(output);
     }
@@ -1784,7 +1784,7 @@ public int getSerializedSize() {
       }
       if (bodyCase_ == 2) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(2, (io.greptime.v1.flow.Server.RemoveRequest) body_);
+          .computeMessageSize(2, (io.greptime.v1.flow.Server.DropRequest) body_);
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -1808,8 +1808,8 @@ public boolean equals(final java.lang.Object obj) {
               .equals(other.getCreate())) return false;
           break;
         case 2:
-          if (!getRemove()
-              .equals(other.getRemove())) return false;
+          if (!getDrop()
+              .equals(other.getDrop())) return false;
           break;
         case 0:
         default:
@@ -1831,8 +1831,8 @@ public int hashCode() {
           hash = (53 * hash) + getCreate().hashCode();
           break;
         case 2:
-          hash = (37 * hash) + REMOVE_FIELD_NUMBER;
-          hash = (53 * hash) + getRemove().hashCode();
+          hash = (37 * hash) + DROP_FIELD_NUMBER;
+          hash = (53 * hash) + getDrop().hashCode();
           break;
         case 0:
         default:
@@ -2006,10 +2006,10 @@ public io.greptime.v1.flow.Server.FlowRequest buildPartial() {
           }
         }
         if (bodyCase_ == 2) {
-          if (removeBuilder_ == null) {
+          if (dropBuilder_ == null) {
             result.body_ = body_;
           } else {
-            result.body_ = removeBuilder_.build();
+            result.body_ = dropBuilder_.build();
           }
         }
         result.bodyCase_ = bodyCase_;
@@ -2066,8 +2066,8 @@ public Builder mergeFrom(io.greptime.v1.flow.Server.FlowRequest other) {
             mergeCreate(other.getCreate());
             break;
           }
-          case REMOVE: {
-            mergeRemove(other.getRemove());
+          case DROP: {
+            mergeDrop(other.getDrop());
             break;
           }
           case BODY_NOT_SET: {
@@ -2261,71 +2261,71 @@ public io.greptime.v1.flow.Server.CreateRequestOrBuilder getCreateOrBuilder() {
       }
 
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.flow.Server.RemoveRequest, io.greptime.v1.flow.Server.RemoveRequest.Builder, io.greptime.v1.flow.Server.RemoveRequestOrBuilder> removeBuilder_;
+          io.greptime.v1.flow.Server.DropRequest, io.greptime.v1.flow.Server.DropRequest.Builder, io.greptime.v1.flow.Server.DropRequestOrBuilder> dropBuilder_;
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
-       * @return Whether the remove field is set.
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
+       * @return Whether the drop field is set.
        */
       @java.lang.Override
-      public boolean hasRemove() {
+      public boolean hasDrop() {
         return bodyCase_ == 2;
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
-       * @return The remove.
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
+       * @return The drop.
        */
       @java.lang.Override
-      public io.greptime.v1.flow.Server.RemoveRequest getRemove() {
-        if (removeBuilder_ == null) {
+      public io.greptime.v1.flow.Server.DropRequest getDrop() {
+        if (dropBuilder_ == null) {
           if (bodyCase_ == 2) {
-            return (io.greptime.v1.flow.Server.RemoveRequest) body_;
+            return (io.greptime.v1.flow.Server.DropRequest) body_;
           }
-          return io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+          return io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
         } else {
           if (bodyCase_ == 2) {
-            return removeBuilder_.getMessage();
+            return dropBuilder_.getMessage();
           }
-          return io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+          return io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
-      public Builder setRemove(io.greptime.v1.flow.Server.RemoveRequest value) {
-        if (removeBuilder_ == null) {
+      public Builder setDrop(io.greptime.v1.flow.Server.DropRequest value) {
+        if (dropBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
           body_ = value;
           onChanged();
         } else {
-          removeBuilder_.setMessage(value);
+          dropBuilder_.setMessage(value);
         }
         bodyCase_ = 2;
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
-      public Builder setRemove(
-          io.greptime.v1.flow.Server.RemoveRequest.Builder builderForValue) {
-        if (removeBuilder_ == null) {
+      public Builder setDrop(
+          io.greptime.v1.flow.Server.DropRequest.Builder builderForValue) {
+        if (dropBuilder_ == null) {
           body_ = builderForValue.build();
           onChanged();
         } else {
-          removeBuilder_.setMessage(builderForValue.build());
+          dropBuilder_.setMessage(builderForValue.build());
         }
         bodyCase_ = 2;
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
-      public Builder mergeRemove(io.greptime.v1.flow.Server.RemoveRequest value) {
-        if (removeBuilder_ == null) {
+      public Builder mergeDrop(io.greptime.v1.flow.Server.DropRequest value) {
+        if (dropBuilder_ == null) {
           if (bodyCase_ == 2 &&
-              body_ != io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance()) {
-            body_ = io.greptime.v1.flow.Server.RemoveRequest.newBuilder((io.greptime.v1.flow.Server.RemoveRequest) body_)
+              body_ != io.greptime.v1.flow.Server.DropRequest.getDefaultInstance()) {
+            body_ = io.greptime.v1.flow.Server.DropRequest.newBuilder((io.greptime.v1.flow.Server.DropRequest) body_)
                 .mergeFrom(value).buildPartial();
           } else {
             body_ = value;
@@ -2333,19 +2333,19 @@ public Builder mergeRemove(io.greptime.v1.flow.Server.RemoveRequest value) {
           onChanged();
         } else {
           if (bodyCase_ == 2) {
-            removeBuilder_.mergeFrom(value);
+            dropBuilder_.mergeFrom(value);
           } else {
-            removeBuilder_.setMessage(value);
+            dropBuilder_.setMessage(value);
           }
         }
         bodyCase_ = 2;
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
-      public Builder clearRemove() {
-        if (removeBuilder_ == null) {
+      public Builder clearDrop() {
+        if (dropBuilder_ == null) {
           if (bodyCase_ == 2) {
             bodyCase_ = 0;
             body_ = null;
@@ -2356,50 +2356,50 @@ public Builder clearRemove() {
             bodyCase_ = 0;
             body_ = null;
           }
-          removeBuilder_.clear();
+          dropBuilder_.clear();
         }
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
-      public io.greptime.v1.flow.Server.RemoveRequest.Builder getRemoveBuilder() {
-        return getRemoveFieldBuilder().getBuilder();
+      public io.greptime.v1.flow.Server.DropRequest.Builder getDropBuilder() {
+        return getDropFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
       @java.lang.Override
-      public io.greptime.v1.flow.Server.RemoveRequestOrBuilder getRemoveOrBuilder() {
-        if ((bodyCase_ == 2) && (removeBuilder_ != null)) {
-          return removeBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.flow.Server.DropRequestOrBuilder getDropOrBuilder() {
+        if ((bodyCase_ == 2) && (dropBuilder_ != null)) {
+          return dropBuilder_.getMessageOrBuilder();
         } else {
           if (bodyCase_ == 2) {
-            return (io.greptime.v1.flow.Server.RemoveRequest) body_;
+            return (io.greptime.v1.flow.Server.DropRequest) body_;
           }
-          return io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+          return io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
         }
       }
       /**
-       * <code>.greptime.v1.flow.RemoveRequest remove = 2;</code>
+       * <code>.greptime.v1.flow.DropRequest drop = 2;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.flow.Server.RemoveRequest, io.greptime.v1.flow.Server.RemoveRequest.Builder, io.greptime.v1.flow.Server.RemoveRequestOrBuilder> 
-          getRemoveFieldBuilder() {
-        if (removeBuilder_ == null) {
+          io.greptime.v1.flow.Server.DropRequest, io.greptime.v1.flow.Server.DropRequest.Builder, io.greptime.v1.flow.Server.DropRequestOrBuilder> 
+          getDropFieldBuilder() {
+        if (dropBuilder_ == null) {
           if (!(bodyCase_ == 2)) {
-            body_ = io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+            body_ = io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
           }
-          removeBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
-              io.greptime.v1.flow.Server.RemoveRequest, io.greptime.v1.flow.Server.RemoveRequest.Builder, io.greptime.v1.flow.Server.RemoveRequestOrBuilder>(
-                  (io.greptime.v1.flow.Server.RemoveRequest) body_,
+          dropBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+              io.greptime.v1.flow.Server.DropRequest, io.greptime.v1.flow.Server.DropRequest.Builder, io.greptime.v1.flow.Server.DropRequestOrBuilder>(
+                  (io.greptime.v1.flow.Server.DropRequest) body_,
                   getParentForChildren(),
                   isClean());
           body_ = null;
         }
         bodyCase_ = 2;
         onChanged();;
-        return removeBuilder_;
+        return dropBuilder_;
       }
       @java.lang.Override
       public final Builder setUnknownFields(
@@ -3962,19 +3962,19 @@ public interface CreateRequestOrBuilder extends
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return Whether the taskId field is set.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return Whether the flowId field is set.
      */
-    boolean hasTaskId();
+    boolean hasFlowId();
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return The taskId.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return The flowId.
      */
-    io.greptime.v1.flow.Server.TaskId getTaskId();
+    io.greptime.v1.flow.Server.TaskId getFlowId();
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
      */
-    io.greptime.v1.flow.Server.TaskIdOrBuilder getTaskIdOrBuilder();
+    io.greptime.v1.flow.Server.TaskIdOrBuilder getFlowIdOrBuilder();
 
     /**
      * <code>repeated .greptime.v1.TableId source_table_ids = 2;</code>
@@ -4058,44 +4058,44 @@ io.greptime.v1.Ddl.TableIdOrBuilder getSourceTableIdsOrBuilder(
         getSqlBytes();
 
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
-    int getTaskOptionsCount();
+    int getFlowOptionsCount();
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
-    boolean containsTaskOptions(
+    boolean containsFlowOptions(
         java.lang.String key);
     /**
-     * Use {@link #getTaskOptionsMap()} instead.
+     * Use {@link #getFlowOptionsMap()} instead.
      */
     @java.lang.Deprecated
     java.util.Map<java.lang.String, java.lang.String>
-    getTaskOptions();
+    getFlowOptions();
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
     java.util.Map<java.lang.String, java.lang.String>
-    getTaskOptionsMap();
+    getFlowOptionsMap();
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
 
     /* nullable */
-java.lang.String getTaskOptionsOrDefault(
+java.lang.String getFlowOptionsOrDefault(
         java.lang.String key,
         /* nullable */
 java.lang.String defaultValue);
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
 
-    java.lang.String getTaskOptionsOrThrow(
+    java.lang.String getFlowOptionsOrThrow(
         java.lang.String key);
   }
   /**
    * <pre>
-   * Create a flow task
+   * Create a flow
    * 
    * Very similar to `ddl.CreateTaskExpr`, 
    * replace `source_table_names` with `source_table_ids`
@@ -4152,13 +4152,13 @@ private CreateRequest(
               break;
             case 10: {
               io.greptime.v1.flow.Server.TaskId.Builder subBuilder = null;
-              if (taskId_ != null) {
-                subBuilder = taskId_.toBuilder();
+              if (flowId_ != null) {
+                subBuilder = flowId_.toBuilder();
               }
-              taskId_ = input.readMessage(io.greptime.v1.flow.Server.TaskId.parser(), extensionRegistry);
+              flowId_ = input.readMessage(io.greptime.v1.flow.Server.TaskId.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom(taskId_);
-                taskId_ = subBuilder.buildPartial();
+                subBuilder.mergeFrom(flowId_);
+                flowId_ = subBuilder.buildPartial();
               }
 
               break;
@@ -4210,15 +4210,15 @@ private CreateRequest(
             }
             case 66: {
               if (!((mutable_bitField0_ & 0x00000002) != 0)) {
-                taskOptions_ = com.google.protobuf.MapField.newMapField(
-                    TaskOptionsDefaultEntryHolder.defaultEntry);
+                flowOptions_ = com.google.protobuf.MapField.newMapField(
+                    FlowOptionsDefaultEntryHolder.defaultEntry);
                 mutable_bitField0_ |= 0x00000002;
               }
               com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
-              taskOptions__ = input.readMessage(
-                  TaskOptionsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
-              taskOptions_.getMutableMap().put(
-                  taskOptions__.getKey(), taskOptions__.getValue());
+              flowOptions__ = input.readMessage(
+                  FlowOptionsDefaultEntryHolder.defaultEntry.getParserForType(), extensionRegistry);
+              flowOptions_.getMutableMap().put(
+                  flowOptions__.getKey(), flowOptions__.getValue());
               break;
             }
             default: {
@@ -4256,7 +4256,7 @@ protected com.google.protobuf.MapField internalGetMapField(
         int number) {
       switch (number) {
         case 8:
-          return internalGetTaskOptions();
+          return internalGetFlowOptions();
         default:
           throw new RuntimeException(
               "Invalid map field number: " + number);
@@ -4270,30 +4270,30 @@ protected com.google.protobuf.MapField internalGetMapField(
               io.greptime.v1.flow.Server.CreateRequest.class, io.greptime.v1.flow.Server.CreateRequest.Builder.class);
     }
 
-    public static final int TASK_ID_FIELD_NUMBER = 1;
-    private io.greptime.v1.flow.Server.TaskId taskId_;
+    public static final int FLOW_ID_FIELD_NUMBER = 1;
+    private io.greptime.v1.flow.Server.TaskId flowId_;
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return Whether the taskId field is set.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return Whether the flowId field is set.
      */
     @java.lang.Override
-    public boolean hasTaskId() {
-      return taskId_ != null;
+    public boolean hasFlowId() {
+      return flowId_ != null;
     }
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return The taskId.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return The flowId.
      */
     @java.lang.Override
-    public io.greptime.v1.flow.Server.TaskId getTaskId() {
-      return taskId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : taskId_;
+    public io.greptime.v1.flow.Server.TaskId getFlowId() {
+      return flowId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : flowId_;
     }
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.flow.Server.TaskIdOrBuilder getTaskIdOrBuilder() {
-      return getTaskId();
+    public io.greptime.v1.flow.Server.TaskIdOrBuilder getFlowIdOrBuilder() {
+      return getFlowId();
     }
 
     public static final int SOURCE_TABLE_IDS_FIELD_NUMBER = 2;
@@ -4487,81 +4487,81 @@ public java.lang.String getSql() {
       }
     }
 
-    public static final int TASK_OPTIONS_FIELD_NUMBER = 8;
-    private static final class TaskOptionsDefaultEntryHolder {
+    public static final int FLOW_OPTIONS_FIELD_NUMBER = 8;
+    private static final class FlowOptionsDefaultEntryHolder {
       static final com.google.protobuf.MapEntry<
           java.lang.String, java.lang.String> defaultEntry =
               com.google.protobuf.MapEntry
               .<java.lang.String, java.lang.String>newDefaultInstance(
-                  io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_CreateRequest_TaskOptionsEntry_descriptor, 
+                  io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_CreateRequest_FlowOptionsEntry_descriptor, 
                   com.google.protobuf.WireFormat.FieldType.STRING,
                   "",
                   com.google.protobuf.WireFormat.FieldType.STRING,
                   "");
     }
     private com.google.protobuf.MapField<
-        java.lang.String, java.lang.String> taskOptions_;
+        java.lang.String, java.lang.String> flowOptions_;
     private com.google.protobuf.MapField<java.lang.String, java.lang.String>
-    internalGetTaskOptions() {
-      if (taskOptions_ == null) {
+    internalGetFlowOptions() {
+      if (flowOptions_ == null) {
         return com.google.protobuf.MapField.emptyMapField(
-            TaskOptionsDefaultEntryHolder.defaultEntry);
+            FlowOptionsDefaultEntryHolder.defaultEntry);
       }
-      return taskOptions_;
+      return flowOptions_;
     }
 
-    public int getTaskOptionsCount() {
-      return internalGetTaskOptions().getMap().size();
+    public int getFlowOptionsCount() {
+      return internalGetFlowOptions().getMap().size();
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
 
     @java.lang.Override
-    public boolean containsTaskOptions(
+    public boolean containsFlowOptions(
         java.lang.String key) {
       if (key == null) { throw new NullPointerException("map key"); }
-      return internalGetTaskOptions().getMap().containsKey(key);
+      return internalGetFlowOptions().getMap().containsKey(key);
     }
     /**
-     * Use {@link #getTaskOptionsMap()} instead.
+     * Use {@link #getFlowOptionsMap()} instead.
      */
     @java.lang.Override
     @java.lang.Deprecated
-    public java.util.Map<java.lang.String, java.lang.String> getTaskOptions() {
-      return getTaskOptionsMap();
+    public java.util.Map<java.lang.String, java.lang.String> getFlowOptions() {
+      return getFlowOptionsMap();
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
     @java.lang.Override
 
-    public java.util.Map<java.lang.String, java.lang.String> getTaskOptionsMap() {
-      return internalGetTaskOptions().getMap();
+    public java.util.Map<java.lang.String, java.lang.String> getFlowOptionsMap() {
+      return internalGetFlowOptions().getMap();
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
     @java.lang.Override
 
-    public java.lang.String getTaskOptionsOrDefault(
+    public java.lang.String getFlowOptionsOrDefault(
         java.lang.String key,
         java.lang.String defaultValue) {
       if (key == null) { throw new NullPointerException("map key"); }
       java.util.Map<java.lang.String, java.lang.String> map =
-          internalGetTaskOptions().getMap();
+          internalGetFlowOptions().getMap();
       return map.containsKey(key) ? map.get(key) : defaultValue;
     }
     /**
-     * <code>map&lt;string, string&gt; task_options = 8;</code>
+     * <code>map&lt;string, string&gt; flow_options = 8;</code>
      */
     @java.lang.Override
 
-    public java.lang.String getTaskOptionsOrThrow(
+    public java.lang.String getFlowOptionsOrThrow(
         java.lang.String key) {
       if (key == null) { throw new NullPointerException("map key"); }
       java.util.Map<java.lang.String, java.lang.String> map =
-          internalGetTaskOptions().getMap();
+          internalGetFlowOptions().getMap();
       if (!map.containsKey(key)) {
         throw new java.lang.IllegalArgumentException();
       }
@@ -4582,8 +4582,8 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      if (taskId_ != null) {
-        output.writeMessage(1, getTaskId());
+      if (flowId_ != null) {
+        output.writeMessage(1, getFlowId());
       }
       for (int i = 0; i < sourceTableIds_.size(); i++) {
         output.writeMessage(2, sourceTableIds_.get(i));
@@ -4606,8 +4606,8 @@ public void writeTo(com.google.protobuf.CodedOutputStream output)
       com.google.protobuf.GeneratedMessageV3
         .serializeStringMapTo(
           output,
-          internalGetTaskOptions(),
-          TaskOptionsDefaultEntryHolder.defaultEntry,
+          internalGetFlowOptions(),
+          FlowOptionsDefaultEntryHolder.defaultEntry,
           8);
       unknownFields.writeTo(output);
     }
@@ -4618,9 +4618,9 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (taskId_ != null) {
+      if (flowId_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getTaskId());
+          .computeMessageSize(1, getFlowId());
       }
       for (int i = 0; i < sourceTableIds_.size(); i++) {
         size += com.google.protobuf.CodedOutputStream
@@ -4644,14 +4644,14 @@ public int getSerializedSize() {
         size += com.google.protobuf.GeneratedMessageV3.computeStringSize(7, sql_);
       }
       for (java.util.Map.Entry<java.lang.String, java.lang.String> entry
-           : internalGetTaskOptions().getMap().entrySet()) {
+           : internalGetFlowOptions().getMap().entrySet()) {
         com.google.protobuf.MapEntry<java.lang.String, java.lang.String>
-        taskOptions__ = TaskOptionsDefaultEntryHolder.defaultEntry.newBuilderForType()
+        flowOptions__ = FlowOptionsDefaultEntryHolder.defaultEntry.newBuilderForType()
             .setKey(entry.getKey())
             .setValue(entry.getValue())
             .build();
         size += com.google.protobuf.CodedOutputStream
-            .computeMessageSize(8, taskOptions__);
+            .computeMessageSize(8, flowOptions__);
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -4668,10 +4668,10 @@ public boolean equals(final java.lang.Object obj) {
       }
       io.greptime.v1.flow.Server.CreateRequest other = (io.greptime.v1.flow.Server.CreateRequest) obj;
 
-      if (hasTaskId() != other.hasTaskId()) return false;
-      if (hasTaskId()) {
-        if (!getTaskId()
-            .equals(other.getTaskId())) return false;
+      if (hasFlowId() != other.hasFlowId()) return false;
+      if (hasFlowId()) {
+        if (!getFlowId()
+            .equals(other.getFlowId())) return false;
       }
       if (!getSourceTableIdsList()
           .equals(other.getSourceTableIdsList())) return false;
@@ -4688,8 +4688,8 @@ public boolean equals(final java.lang.Object obj) {
           .equals(other.getComment())) return false;
       if (!getSql()
           .equals(other.getSql())) return false;
-      if (!internalGetTaskOptions().equals(
-          other.internalGetTaskOptions())) return false;
+      if (!internalGetFlowOptions().equals(
+          other.internalGetFlowOptions())) return false;
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
     }
@@ -4701,9 +4701,9 @@ public int hashCode() {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasTaskId()) {
-        hash = (37 * hash) + TASK_ID_FIELD_NUMBER;
-        hash = (53 * hash) + getTaskId().hashCode();
+      if (hasFlowId()) {
+        hash = (37 * hash) + FLOW_ID_FIELD_NUMBER;
+        hash = (53 * hash) + getFlowId().hashCode();
       }
       if (getSourceTableIdsCount() > 0) {
         hash = (37 * hash) + SOURCE_TABLE_IDS_FIELD_NUMBER;
@@ -4722,9 +4722,9 @@ public int hashCode() {
       hash = (53 * hash) + getComment().hashCode();
       hash = (37 * hash) + SQL_FIELD_NUMBER;
       hash = (53 * hash) + getSql().hashCode();
-      if (!internalGetTaskOptions().getMap().isEmpty()) {
-        hash = (37 * hash) + TASK_OPTIONS_FIELD_NUMBER;
-        hash = (53 * hash) + internalGetTaskOptions().hashCode();
+      if (!internalGetFlowOptions().getMap().isEmpty()) {
+        hash = (37 * hash) + FLOW_OPTIONS_FIELD_NUMBER;
+        hash = (53 * hash) + internalGetFlowOptions().hashCode();
       }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
@@ -4823,7 +4823,7 @@ protected Builder newBuilderForType(
     }
     /**
      * <pre>
-     * Create a flow task
+     * Create a flow
      * 
      * Very similar to `ddl.CreateTaskExpr`, 
      * replace `source_table_names` with `source_table_ids`
@@ -4845,7 +4845,7 @@ protected com.google.protobuf.MapField internalGetMapField(
           int number) {
         switch (number) {
           case 8:
-            return internalGetTaskOptions();
+            return internalGetFlowOptions();
           default:
             throw new RuntimeException(
                 "Invalid map field number: " + number);
@@ -4856,7 +4856,7 @@ protected com.google.protobuf.MapField internalGetMutableMapField(
           int number) {
         switch (number) {
           case 8:
-            return internalGetMutableTaskOptions();
+            return internalGetMutableFlowOptions();
           default:
             throw new RuntimeException(
                 "Invalid map field number: " + number);
@@ -4889,11 +4889,11 @@ private void maybeForceBuilderInitialization() {
       @java.lang.Override
       public Builder clear() {
         super.clear();
-        if (taskIdBuilder_ == null) {
-          taskId_ = null;
+        if (flowIdBuilder_ == null) {
+          flowId_ = null;
         } else {
-          taskId_ = null;
-          taskIdBuilder_ = null;
+          flowId_ = null;
+          flowIdBuilder_ = null;
         }
         if (sourceTableIdsBuilder_ == null) {
           sourceTableIds_ = java.util.Collections.emptyList();
@@ -4915,7 +4915,7 @@ public Builder clear() {
 
         sql_ = "";
 
-        internalGetMutableTaskOptions().clear();
+        internalGetMutableFlowOptions().clear();
         return this;
       }
 
@@ -4943,10 +4943,10 @@ public io.greptime.v1.flow.Server.CreateRequest build() {
       public io.greptime.v1.flow.Server.CreateRequest buildPartial() {
         io.greptime.v1.flow.Server.CreateRequest result = new io.greptime.v1.flow.Server.CreateRequest(this);
         int from_bitField0_ = bitField0_;
-        if (taskIdBuilder_ == null) {
-          result.taskId_ = taskId_;
+        if (flowIdBuilder_ == null) {
+          result.flowId_ = flowId_;
         } else {
-          result.taskId_ = taskIdBuilder_.build();
+          result.flowId_ = flowIdBuilder_.build();
         }
         if (sourceTableIdsBuilder_ == null) {
           if (((bitField0_ & 0x00000001) != 0)) {
@@ -4966,8 +4966,8 @@ public io.greptime.v1.flow.Server.CreateRequest buildPartial() {
         result.expireWhen_ = expireWhen_;
         result.comment_ = comment_;
         result.sql_ = sql_;
-        result.taskOptions_ = internalGetTaskOptions();
-        result.taskOptions_.makeImmutable();
+        result.flowOptions_ = internalGetFlowOptions();
+        result.flowOptions_.makeImmutable();
         onBuilt();
         return result;
       }
@@ -5016,8 +5016,8 @@ public Builder mergeFrom(com.google.protobuf.Message other) {
 
       public Builder mergeFrom(io.greptime.v1.flow.Server.CreateRequest other) {
         if (other == io.greptime.v1.flow.Server.CreateRequest.getDefaultInstance()) return this;
-        if (other.hasTaskId()) {
-          mergeTaskId(other.getTaskId());
+        if (other.hasFlowId()) {
+          mergeFlowId(other.getFlowId());
         }
         if (sourceTableIdsBuilder_ == null) {
           if (!other.sourceTableIds_.isEmpty()) {
@@ -5063,8 +5063,8 @@ public Builder mergeFrom(io.greptime.v1.flow.Server.CreateRequest other) {
           sql_ = other.sql_;
           onChanged();
         }
-        internalGetMutableTaskOptions().mergeFrom(
-            other.internalGetTaskOptions());
+        internalGetMutableFlowOptions().mergeFrom(
+            other.internalGetFlowOptions());
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
         return this;
@@ -5095,123 +5095,123 @@ public Builder mergeFrom(
       }
       private int bitField0_;
 
-      private io.greptime.v1.flow.Server.TaskId taskId_;
+      private io.greptime.v1.flow.Server.TaskId flowId_;
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder> taskIdBuilder_;
+          io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder> flowIdBuilder_;
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-       * @return Whether the taskId field is set.
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+       * @return Whether the flowId field is set.
        */
-      public boolean hasTaskId() {
-        return taskIdBuilder_ != null || taskId_ != null;
+      public boolean hasFlowId() {
+        return flowIdBuilder_ != null || flowId_ != null;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-       * @return The taskId.
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+       * @return The flowId.
        */
-      public io.greptime.v1.flow.Server.TaskId getTaskId() {
-        if (taskIdBuilder_ == null) {
-          return taskId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : taskId_;
+      public io.greptime.v1.flow.Server.TaskId getFlowId() {
+        if (flowIdBuilder_ == null) {
+          return flowId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : flowId_;
         } else {
-          return taskIdBuilder_.getMessage();
+          return flowIdBuilder_.getMessage();
         }
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder setTaskId(io.greptime.v1.flow.Server.TaskId value) {
-        if (taskIdBuilder_ == null) {
+      public Builder setFlowId(io.greptime.v1.flow.Server.TaskId value) {
+        if (flowIdBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
-          taskId_ = value;
+          flowId_ = value;
           onChanged();
         } else {
-          taskIdBuilder_.setMessage(value);
+          flowIdBuilder_.setMessage(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder setTaskId(
+      public Builder setFlowId(
           io.greptime.v1.flow.Server.TaskId.Builder builderForValue) {
-        if (taskIdBuilder_ == null) {
-          taskId_ = builderForValue.build();
+        if (flowIdBuilder_ == null) {
+          flowId_ = builderForValue.build();
           onChanged();
         } else {
-          taskIdBuilder_.setMessage(builderForValue.build());
+          flowIdBuilder_.setMessage(builderForValue.build());
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder mergeTaskId(io.greptime.v1.flow.Server.TaskId value) {
-        if (taskIdBuilder_ == null) {
-          if (taskId_ != null) {
-            taskId_ =
-              io.greptime.v1.flow.Server.TaskId.newBuilder(taskId_).mergeFrom(value).buildPartial();
+      public Builder mergeFlowId(io.greptime.v1.flow.Server.TaskId value) {
+        if (flowIdBuilder_ == null) {
+          if (flowId_ != null) {
+            flowId_ =
+              io.greptime.v1.flow.Server.TaskId.newBuilder(flowId_).mergeFrom(value).buildPartial();
           } else {
-            taskId_ = value;
+            flowId_ = value;
           }
           onChanged();
         } else {
-          taskIdBuilder_.mergeFrom(value);
+          flowIdBuilder_.mergeFrom(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder clearTaskId() {
-        if (taskIdBuilder_ == null) {
-          taskId_ = null;
+      public Builder clearFlowId() {
+        if (flowIdBuilder_ == null) {
+          flowId_ = null;
           onChanged();
         } else {
-          taskId_ = null;
-          taskIdBuilder_ = null;
+          flowId_ = null;
+          flowIdBuilder_ = null;
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public io.greptime.v1.flow.Server.TaskId.Builder getTaskIdBuilder() {
+      public io.greptime.v1.flow.Server.TaskId.Builder getFlowIdBuilder() {
         
         onChanged();
-        return getTaskIdFieldBuilder().getBuilder();
+        return getFlowIdFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public io.greptime.v1.flow.Server.TaskIdOrBuilder getTaskIdOrBuilder() {
-        if (taskIdBuilder_ != null) {
-          return taskIdBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.flow.Server.TaskIdOrBuilder getFlowIdOrBuilder() {
+        if (flowIdBuilder_ != null) {
+          return flowIdBuilder_.getMessageOrBuilder();
         } else {
-          return taskId_ == null ?
-              io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : taskId_;
+          return flowId_ == null ?
+              io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : flowId_;
         }
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
           io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder> 
-          getTaskIdFieldBuilder() {
-        if (taskIdBuilder_ == null) {
-          taskIdBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+          getFlowIdFieldBuilder() {
+        if (flowIdBuilder_ == null) {
+          flowIdBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
               io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder>(
-                  getTaskId(),
+                  getFlowId(),
                   getParentForChildren(),
                   isClean());
-          taskId_ = null;
+          flowId_ = null;
         }
-        return taskIdBuilder_;
+        return flowIdBuilder_;
       }
 
       private java.util.List<io.greptime.v1.Ddl.TableId> sourceTableIds_ =
@@ -5833,99 +5833,99 @@ public Builder setSqlBytes(
       }
 
       private com.google.protobuf.MapField<
-          java.lang.String, java.lang.String> taskOptions_;
+          java.lang.String, java.lang.String> flowOptions_;
       private com.google.protobuf.MapField<java.lang.String, java.lang.String>
-      internalGetTaskOptions() {
-        if (taskOptions_ == null) {
+      internalGetFlowOptions() {
+        if (flowOptions_ == null) {
           return com.google.protobuf.MapField.emptyMapField(
-              TaskOptionsDefaultEntryHolder.defaultEntry);
+              FlowOptionsDefaultEntryHolder.defaultEntry);
         }
-        return taskOptions_;
+        return flowOptions_;
       }
       private com.google.protobuf.MapField<java.lang.String, java.lang.String>
-      internalGetMutableTaskOptions() {
+      internalGetMutableFlowOptions() {
         onChanged();;
-        if (taskOptions_ == null) {
-          taskOptions_ = com.google.protobuf.MapField.newMapField(
-              TaskOptionsDefaultEntryHolder.defaultEntry);
+        if (flowOptions_ == null) {
+          flowOptions_ = com.google.protobuf.MapField.newMapField(
+              FlowOptionsDefaultEntryHolder.defaultEntry);
         }
-        if (!taskOptions_.isMutable()) {
-          taskOptions_ = taskOptions_.copy();
+        if (!flowOptions_.isMutable()) {
+          flowOptions_ = flowOptions_.copy();
         }
-        return taskOptions_;
+        return flowOptions_;
       }
 
-      public int getTaskOptionsCount() {
-        return internalGetTaskOptions().getMap().size();
+      public int getFlowOptionsCount() {
+        return internalGetFlowOptions().getMap().size();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
 
       @java.lang.Override
-      public boolean containsTaskOptions(
+      public boolean containsFlowOptions(
           java.lang.String key) {
         if (key == null) { throw new NullPointerException("map key"); }
-        return internalGetTaskOptions().getMap().containsKey(key);
+        return internalGetFlowOptions().getMap().containsKey(key);
       }
       /**
-       * Use {@link #getTaskOptionsMap()} instead.
+       * Use {@link #getFlowOptionsMap()} instead.
        */
       @java.lang.Override
       @java.lang.Deprecated
-      public java.util.Map<java.lang.String, java.lang.String> getTaskOptions() {
-        return getTaskOptionsMap();
+      public java.util.Map<java.lang.String, java.lang.String> getFlowOptions() {
+        return getFlowOptionsMap();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
       @java.lang.Override
 
-      public java.util.Map<java.lang.String, java.lang.String> getTaskOptionsMap() {
-        return internalGetTaskOptions().getMap();
+      public java.util.Map<java.lang.String, java.lang.String> getFlowOptionsMap() {
+        return internalGetFlowOptions().getMap();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
       @java.lang.Override
 
-      public java.lang.String getTaskOptionsOrDefault(
+      public java.lang.String getFlowOptionsOrDefault(
           java.lang.String key,
           java.lang.String defaultValue) {
         if (key == null) { throw new NullPointerException("map key"); }
         java.util.Map<java.lang.String, java.lang.String> map =
-            internalGetTaskOptions().getMap();
+            internalGetFlowOptions().getMap();
         return map.containsKey(key) ? map.get(key) : defaultValue;
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
       @java.lang.Override
 
-      public java.lang.String getTaskOptionsOrThrow(
+      public java.lang.String getFlowOptionsOrThrow(
           java.lang.String key) {
         if (key == null) { throw new NullPointerException("map key"); }
         java.util.Map<java.lang.String, java.lang.String> map =
-            internalGetTaskOptions().getMap();
+            internalGetFlowOptions().getMap();
         if (!map.containsKey(key)) {
           throw new java.lang.IllegalArgumentException();
         }
         return map.get(key);
       }
 
-      public Builder clearTaskOptions() {
-        internalGetMutableTaskOptions().getMutableMap()
+      public Builder clearFlowOptions() {
+        internalGetMutableFlowOptions().getMutableMap()
             .clear();
         return this;
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
 
-      public Builder removeTaskOptions(
+      public Builder removeFlowOptions(
           java.lang.String key) {
         if (key == null) { throw new NullPointerException("map key"); }
-        internalGetMutableTaskOptions().getMutableMap()
+        internalGetMutableFlowOptions().getMutableMap()
             .remove(key);
         return this;
       }
@@ -5934,13 +5934,13 @@ public Builder removeTaskOptions(
        */
       @java.lang.Deprecated
       public java.util.Map<java.lang.String, java.lang.String>
-      getMutableTaskOptions() {
-        return internalGetMutableTaskOptions().getMutableMap();
+      getMutableFlowOptions() {
+        return internalGetMutableFlowOptions().getMutableMap();
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
-      public Builder putTaskOptions(
+      public Builder putFlowOptions(
           java.lang.String key,
           java.lang.String value) {
         if (key == null) { throw new NullPointerException("map key"); }
@@ -5948,17 +5948,17 @@ public Builder putTaskOptions(
   throw new NullPointerException("map value");
 }
 
-        internalGetMutableTaskOptions().getMutableMap()
+        internalGetMutableFlowOptions().getMutableMap()
             .put(key, value);
         return this;
       }
       /**
-       * <code>map&lt;string, string&gt; task_options = 8;</code>
+       * <code>map&lt;string, string&gt; flow_options = 8;</code>
        */
 
-      public Builder putAllTaskOptions(
+      public Builder putAllFlowOptions(
           java.util.Map<java.lang.String, java.lang.String> values) {
-        internalGetMutableTaskOptions().getMutableMap()
+        internalGetMutableFlowOptions().getMutableMap()
             .putAll(values);
         return this;
       }
@@ -6015,45 +6015,45 @@ public io.greptime.v1.flow.Server.CreateRequest getDefaultInstanceForType() {
 
   }
 
-  public interface RemoveRequestOrBuilder extends
-      // @@protoc_insertion_point(interface_extends:greptime.v1.flow.RemoveRequest)
+  public interface DropRequestOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:greptime.v1.flow.DropRequest)
       com.google.protobuf.MessageOrBuilder {
 
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return Whether the taskId field is set.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return Whether the flowId field is set.
      */
-    boolean hasTaskId();
+    boolean hasFlowId();
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return The taskId.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return The flowId.
      */
-    io.greptime.v1.flow.Server.TaskId getTaskId();
+    io.greptime.v1.flow.Server.TaskId getFlowId();
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
      */
-    io.greptime.v1.flow.Server.TaskIdOrBuilder getTaskIdOrBuilder();
+    io.greptime.v1.flow.Server.TaskIdOrBuilder getFlowIdOrBuilder();
   }
   /**
-   * Protobuf type {@code greptime.v1.flow.RemoveRequest}
+   * Protobuf type {@code greptime.v1.flow.DropRequest}
    */
-  public static final class RemoveRequest extends
+  public static final class DropRequest extends
       com.google.protobuf.GeneratedMessageV3 implements
-      // @@protoc_insertion_point(message_implements:greptime.v1.flow.RemoveRequest)
-      RemoveRequestOrBuilder {
+      // @@protoc_insertion_point(message_implements:greptime.v1.flow.DropRequest)
+      DropRequestOrBuilder {
   private static final long serialVersionUID = 0L;
-    // Use RemoveRequest.newBuilder() to construct.
-    private RemoveRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+    // Use DropRequest.newBuilder() to construct.
+    private DropRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
       super(builder);
     }
-    private RemoveRequest() {
+    private DropRequest() {
     }
 
     @java.lang.Override
     @SuppressWarnings({"unused"})
     protected java.lang.Object newInstance(
         UnusedPrivateParameter unused) {
-      return new RemoveRequest();
+      return new DropRequest();
     }
 
     @java.lang.Override
@@ -6061,7 +6061,7 @@ protected java.lang.Object newInstance(
     getUnknownFields() {
       return this.unknownFields;
     }
-    private RemoveRequest(
+    private DropRequest(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
@@ -6081,13 +6081,13 @@ private RemoveRequest(
               break;
             case 10: {
               io.greptime.v1.flow.Server.TaskId.Builder subBuilder = null;
-              if (taskId_ != null) {
-                subBuilder = taskId_.toBuilder();
+              if (flowId_ != null) {
+                subBuilder = flowId_.toBuilder();
               }
-              taskId_ = input.readMessage(io.greptime.v1.flow.Server.TaskId.parser(), extensionRegistry);
+              flowId_ = input.readMessage(io.greptime.v1.flow.Server.TaskId.parser(), extensionRegistry);
               if (subBuilder != null) {
-                subBuilder.mergeFrom(taskId_);
-                taskId_ = subBuilder.buildPartial();
+                subBuilder.mergeFrom(flowId_);
+                flowId_ = subBuilder.buildPartial();
               }
 
               break;
@@ -6115,41 +6115,41 @@ private RemoveRequest(
     }
     public static final com.google.protobuf.Descriptors.Descriptor
         getDescriptor() {
-      return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_RemoveRequest_descriptor;
+      return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_DropRequest_descriptor;
     }
 
     @java.lang.Override
     protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
         internalGetFieldAccessorTable() {
-      return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_RemoveRequest_fieldAccessorTable
+      return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_DropRequest_fieldAccessorTable
           .ensureFieldAccessorsInitialized(
-              io.greptime.v1.flow.Server.RemoveRequest.class, io.greptime.v1.flow.Server.RemoveRequest.Builder.class);
+              io.greptime.v1.flow.Server.DropRequest.class, io.greptime.v1.flow.Server.DropRequest.Builder.class);
     }
 
-    public static final int TASK_ID_FIELD_NUMBER = 1;
-    private io.greptime.v1.flow.Server.TaskId taskId_;
+    public static final int FLOW_ID_FIELD_NUMBER = 1;
+    private io.greptime.v1.flow.Server.TaskId flowId_;
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return Whether the taskId field is set.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return Whether the flowId field is set.
      */
     @java.lang.Override
-    public boolean hasTaskId() {
-      return taskId_ != null;
+    public boolean hasFlowId() {
+      return flowId_ != null;
     }
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-     * @return The taskId.
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+     * @return The flowId.
      */
     @java.lang.Override
-    public io.greptime.v1.flow.Server.TaskId getTaskId() {
-      return taskId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : taskId_;
+    public io.greptime.v1.flow.Server.TaskId getFlowId() {
+      return flowId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : flowId_;
     }
     /**
-     * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+     * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
      */
     @java.lang.Override
-    public io.greptime.v1.flow.Server.TaskIdOrBuilder getTaskIdOrBuilder() {
-      return getTaskId();
+    public io.greptime.v1.flow.Server.TaskIdOrBuilder getFlowIdOrBuilder() {
+      return getFlowId();
     }
 
     private byte memoizedIsInitialized = -1;
@@ -6166,8 +6166,8 @@ public final boolean isInitialized() {
     @java.lang.Override
     public void writeTo(com.google.protobuf.CodedOutputStream output)
                         throws java.io.IOException {
-      if (taskId_ != null) {
-        output.writeMessage(1, getTaskId());
+      if (flowId_ != null) {
+        output.writeMessage(1, getFlowId());
       }
       unknownFields.writeTo(output);
     }
@@ -6178,9 +6178,9 @@ public int getSerializedSize() {
       if (size != -1) return size;
 
       size = 0;
-      if (taskId_ != null) {
+      if (flowId_ != null) {
         size += com.google.protobuf.CodedOutputStream
-          .computeMessageSize(1, getTaskId());
+          .computeMessageSize(1, getFlowId());
       }
       size += unknownFields.getSerializedSize();
       memoizedSize = size;
@@ -6192,15 +6192,15 @@ public boolean equals(final java.lang.Object obj) {
       if (obj == this) {
        return true;
       }
-      if (!(obj instanceof io.greptime.v1.flow.Server.RemoveRequest)) {
+      if (!(obj instanceof io.greptime.v1.flow.Server.DropRequest)) {
         return super.equals(obj);
       }
-      io.greptime.v1.flow.Server.RemoveRequest other = (io.greptime.v1.flow.Server.RemoveRequest) obj;
+      io.greptime.v1.flow.Server.DropRequest other = (io.greptime.v1.flow.Server.DropRequest) obj;
 
-      if (hasTaskId() != other.hasTaskId()) return false;
-      if (hasTaskId()) {
-        if (!getTaskId()
-            .equals(other.getTaskId())) return false;
+      if (hasFlowId() != other.hasFlowId()) return false;
+      if (hasFlowId()) {
+        if (!getFlowId()
+            .equals(other.getFlowId())) return false;
       }
       if (!unknownFields.equals(other.unknownFields)) return false;
       return true;
@@ -6213,78 +6213,78 @@ public int hashCode() {
       }
       int hash = 41;
       hash = (19 * hash) + getDescriptor().hashCode();
-      if (hasTaskId()) {
-        hash = (37 * hash) + TASK_ID_FIELD_NUMBER;
-        hash = (53 * hash) + getTaskId().hashCode();
+      if (hasFlowId()) {
+        hash = (37 * hash) + FLOW_ID_FIELD_NUMBER;
+        hash = (53 * hash) + getFlowId().hashCode();
       }
       hash = (29 * hash) + unknownFields.hashCode();
       memoizedHashCode = hash;
       return hash;
     }
 
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         java.nio.ByteBuffer data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         java.nio.ByteBuffer data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         com.google.protobuf.ByteString data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         com.google.protobuf.ByteString data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(byte[] data)
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(byte[] data)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         byte[] data,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws com.google.protobuf.InvalidProtocolBufferException {
       return PARSER.parseFrom(data, extensionRegistry);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(java.io.InputStream input)
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseDelimitedFrom(java.io.InputStream input)
+    public static io.greptime.v1.flow.Server.DropRequest parseDelimitedFrom(java.io.InputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseDelimitedFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseDelimitedFrom(
         java.io.InputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         com.google.protobuf.CodedInputStream input)
         throws java.io.IOException {
       return com.google.protobuf.GeneratedMessageV3
           .parseWithIOException(PARSER, input);
     }
-    public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
+    public static io.greptime.v1.flow.Server.DropRequest parseFrom(
         com.google.protobuf.CodedInputStream input,
         com.google.protobuf.ExtensionRegistryLite extensionRegistry)
         throws java.io.IOException {
@@ -6297,7 +6297,7 @@ public static io.greptime.v1.flow.Server.RemoveRequest parseFrom(
     public static Builder newBuilder() {
       return DEFAULT_INSTANCE.toBuilder();
     }
-    public static Builder newBuilder(io.greptime.v1.flow.Server.RemoveRequest prototype) {
+    public static Builder newBuilder(io.greptime.v1.flow.Server.DropRequest prototype) {
       return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
     }
     @java.lang.Override
@@ -6313,26 +6313,26 @@ protected Builder newBuilderForType(
       return builder;
     }
     /**
-     * Protobuf type {@code greptime.v1.flow.RemoveRequest}
+     * Protobuf type {@code greptime.v1.flow.DropRequest}
      */
     public static final class Builder extends
         com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
-        // @@protoc_insertion_point(builder_implements:greptime.v1.flow.RemoveRequest)
-        io.greptime.v1.flow.Server.RemoveRequestOrBuilder {
+        // @@protoc_insertion_point(builder_implements:greptime.v1.flow.DropRequest)
+        io.greptime.v1.flow.Server.DropRequestOrBuilder {
       public static final com.google.protobuf.Descriptors.Descriptor
           getDescriptor() {
-        return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_RemoveRequest_descriptor;
+        return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_DropRequest_descriptor;
       }
 
       @java.lang.Override
       protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
           internalGetFieldAccessorTable() {
-        return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_RemoveRequest_fieldAccessorTable
+        return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_DropRequest_fieldAccessorTable
             .ensureFieldAccessorsInitialized(
-                io.greptime.v1.flow.Server.RemoveRequest.class, io.greptime.v1.flow.Server.RemoveRequest.Builder.class);
+                io.greptime.v1.flow.Server.DropRequest.class, io.greptime.v1.flow.Server.DropRequest.Builder.class);
       }
 
-      // Construct using io.greptime.v1.flow.Server.RemoveRequest.newBuilder()
+      // Construct using io.greptime.v1.flow.Server.DropRequest.newBuilder()
       private Builder() {
         maybeForceBuilderInitialization();
       }
@@ -6350,11 +6350,11 @@ private void maybeForceBuilderInitialization() {
       @java.lang.Override
       public Builder clear() {
         super.clear();
-        if (taskIdBuilder_ == null) {
-          taskId_ = null;
+        if (flowIdBuilder_ == null) {
+          flowId_ = null;
         } else {
-          taskId_ = null;
-          taskIdBuilder_ = null;
+          flowId_ = null;
+          flowIdBuilder_ = null;
         }
         return this;
       }
@@ -6362,17 +6362,17 @@ public Builder clear() {
       @java.lang.Override
       public com.google.protobuf.Descriptors.Descriptor
           getDescriptorForType() {
-        return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_RemoveRequest_descriptor;
+        return io.greptime.v1.flow.Server.internal_static_greptime_v1_flow_DropRequest_descriptor;
       }
 
       @java.lang.Override
-      public io.greptime.v1.flow.Server.RemoveRequest getDefaultInstanceForType() {
-        return io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance();
+      public io.greptime.v1.flow.Server.DropRequest getDefaultInstanceForType() {
+        return io.greptime.v1.flow.Server.DropRequest.getDefaultInstance();
       }
 
       @java.lang.Override
-      public io.greptime.v1.flow.Server.RemoveRequest build() {
-        io.greptime.v1.flow.Server.RemoveRequest result = buildPartial();
+      public io.greptime.v1.flow.Server.DropRequest build() {
+        io.greptime.v1.flow.Server.DropRequest result = buildPartial();
         if (!result.isInitialized()) {
           throw newUninitializedMessageException(result);
         }
@@ -6380,12 +6380,12 @@ public io.greptime.v1.flow.Server.RemoveRequest build() {
       }
 
       @java.lang.Override
-      public io.greptime.v1.flow.Server.RemoveRequest buildPartial() {
-        io.greptime.v1.flow.Server.RemoveRequest result = new io.greptime.v1.flow.Server.RemoveRequest(this);
-        if (taskIdBuilder_ == null) {
-          result.taskId_ = taskId_;
+      public io.greptime.v1.flow.Server.DropRequest buildPartial() {
+        io.greptime.v1.flow.Server.DropRequest result = new io.greptime.v1.flow.Server.DropRequest(this);
+        if (flowIdBuilder_ == null) {
+          result.flowId_ = flowId_;
         } else {
-          result.taskId_ = taskIdBuilder_.build();
+          result.flowId_ = flowIdBuilder_.build();
         }
         onBuilt();
         return result;
@@ -6425,18 +6425,18 @@ public Builder addRepeatedField(
       }
       @java.lang.Override
       public Builder mergeFrom(com.google.protobuf.Message other) {
-        if (other instanceof io.greptime.v1.flow.Server.RemoveRequest) {
-          return mergeFrom((io.greptime.v1.flow.Server.RemoveRequest)other);
+        if (other instanceof io.greptime.v1.flow.Server.DropRequest) {
+          return mergeFrom((io.greptime.v1.flow.Server.DropRequest)other);
         } else {
           super.mergeFrom(other);
           return this;
         }
       }
 
-      public Builder mergeFrom(io.greptime.v1.flow.Server.RemoveRequest other) {
-        if (other == io.greptime.v1.flow.Server.RemoveRequest.getDefaultInstance()) return this;
-        if (other.hasTaskId()) {
-          mergeTaskId(other.getTaskId());
+      public Builder mergeFrom(io.greptime.v1.flow.Server.DropRequest other) {
+        if (other == io.greptime.v1.flow.Server.DropRequest.getDefaultInstance()) return this;
+        if (other.hasFlowId()) {
+          mergeFlowId(other.getFlowId());
         }
         this.mergeUnknownFields(other.unknownFields);
         onChanged();
@@ -6453,11 +6453,11 @@ public Builder mergeFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws java.io.IOException {
-        io.greptime.v1.flow.Server.RemoveRequest parsedMessage = null;
+        io.greptime.v1.flow.Server.DropRequest parsedMessage = null;
         try {
           parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
         } catch (com.google.protobuf.InvalidProtocolBufferException e) {
-          parsedMessage = (io.greptime.v1.flow.Server.RemoveRequest) e.getUnfinishedMessage();
+          parsedMessage = (io.greptime.v1.flow.Server.DropRequest) e.getUnfinishedMessage();
           throw e.unwrapIOException();
         } finally {
           if (parsedMessage != null) {
@@ -6467,123 +6467,123 @@ public Builder mergeFrom(
         return this;
       }
 
-      private io.greptime.v1.flow.Server.TaskId taskId_;
+      private io.greptime.v1.flow.Server.TaskId flowId_;
       private com.google.protobuf.SingleFieldBuilderV3<
-          io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder> taskIdBuilder_;
+          io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder> flowIdBuilder_;
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-       * @return Whether the taskId field is set.
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+       * @return Whether the flowId field is set.
        */
-      public boolean hasTaskId() {
-        return taskIdBuilder_ != null || taskId_ != null;
+      public boolean hasFlowId() {
+        return flowIdBuilder_ != null || flowId_ != null;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
-       * @return The taskId.
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
+       * @return The flowId.
        */
-      public io.greptime.v1.flow.Server.TaskId getTaskId() {
-        if (taskIdBuilder_ == null) {
-          return taskId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : taskId_;
+      public io.greptime.v1.flow.Server.TaskId getFlowId() {
+        if (flowIdBuilder_ == null) {
+          return flowId_ == null ? io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : flowId_;
         } else {
-          return taskIdBuilder_.getMessage();
+          return flowIdBuilder_.getMessage();
         }
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder setTaskId(io.greptime.v1.flow.Server.TaskId value) {
-        if (taskIdBuilder_ == null) {
+      public Builder setFlowId(io.greptime.v1.flow.Server.TaskId value) {
+        if (flowIdBuilder_ == null) {
           if (value == null) {
             throw new NullPointerException();
           }
-          taskId_ = value;
+          flowId_ = value;
           onChanged();
         } else {
-          taskIdBuilder_.setMessage(value);
+          flowIdBuilder_.setMessage(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder setTaskId(
+      public Builder setFlowId(
           io.greptime.v1.flow.Server.TaskId.Builder builderForValue) {
-        if (taskIdBuilder_ == null) {
-          taskId_ = builderForValue.build();
+        if (flowIdBuilder_ == null) {
+          flowId_ = builderForValue.build();
           onChanged();
         } else {
-          taskIdBuilder_.setMessage(builderForValue.build());
+          flowIdBuilder_.setMessage(builderForValue.build());
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder mergeTaskId(io.greptime.v1.flow.Server.TaskId value) {
-        if (taskIdBuilder_ == null) {
-          if (taskId_ != null) {
-            taskId_ =
-              io.greptime.v1.flow.Server.TaskId.newBuilder(taskId_).mergeFrom(value).buildPartial();
+      public Builder mergeFlowId(io.greptime.v1.flow.Server.TaskId value) {
+        if (flowIdBuilder_ == null) {
+          if (flowId_ != null) {
+            flowId_ =
+              io.greptime.v1.flow.Server.TaskId.newBuilder(flowId_).mergeFrom(value).buildPartial();
           } else {
-            taskId_ = value;
+            flowId_ = value;
           }
           onChanged();
         } else {
-          taskIdBuilder_.mergeFrom(value);
+          flowIdBuilder_.mergeFrom(value);
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public Builder clearTaskId() {
-        if (taskIdBuilder_ == null) {
-          taskId_ = null;
+      public Builder clearFlowId() {
+        if (flowIdBuilder_ == null) {
+          flowId_ = null;
           onChanged();
         } else {
-          taskId_ = null;
-          taskIdBuilder_ = null;
+          flowId_ = null;
+          flowIdBuilder_ = null;
         }
 
         return this;
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public io.greptime.v1.flow.Server.TaskId.Builder getTaskIdBuilder() {
+      public io.greptime.v1.flow.Server.TaskId.Builder getFlowIdBuilder() {
         
         onChanged();
-        return getTaskIdFieldBuilder().getBuilder();
+        return getFlowIdFieldBuilder().getBuilder();
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
-      public io.greptime.v1.flow.Server.TaskIdOrBuilder getTaskIdOrBuilder() {
-        if (taskIdBuilder_ != null) {
-          return taskIdBuilder_.getMessageOrBuilder();
+      public io.greptime.v1.flow.Server.TaskIdOrBuilder getFlowIdOrBuilder() {
+        if (flowIdBuilder_ != null) {
+          return flowIdBuilder_.getMessageOrBuilder();
         } else {
-          return taskId_ == null ?
-              io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : taskId_;
+          return flowId_ == null ?
+              io.greptime.v1.flow.Server.TaskId.getDefaultInstance() : flowId_;
         }
       }
       /**
-       * <code>.greptime.v1.flow.TaskId task_id = 1;</code>
+       * <code>.greptime.v1.flow.TaskId flow_id = 1;</code>
        */
       private com.google.protobuf.SingleFieldBuilderV3<
           io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder> 
-          getTaskIdFieldBuilder() {
-        if (taskIdBuilder_ == null) {
-          taskIdBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
+          getFlowIdFieldBuilder() {
+        if (flowIdBuilder_ == null) {
+          flowIdBuilder_ = new com.google.protobuf.SingleFieldBuilderV3<
               io.greptime.v1.flow.Server.TaskId, io.greptime.v1.flow.Server.TaskId.Builder, io.greptime.v1.flow.Server.TaskIdOrBuilder>(
-                  getTaskId(),
+                  getFlowId(),
                   getParentForChildren(),
                   isClean());
-          taskId_ = null;
+          flowId_ = null;
         }
-        return taskIdBuilder_;
+        return flowIdBuilder_;
       }
       @java.lang.Override
       public final Builder setUnknownFields(
@@ -6598,41 +6598,41 @@ public final Builder mergeUnknownFields(
       }
 
 
-      // @@protoc_insertion_point(builder_scope:greptime.v1.flow.RemoveRequest)
+      // @@protoc_insertion_point(builder_scope:greptime.v1.flow.DropRequest)
     }
 
-    // @@protoc_insertion_point(class_scope:greptime.v1.flow.RemoveRequest)
-    private static final io.greptime.v1.flow.Server.RemoveRequest DEFAULT_INSTANCE;
+    // @@protoc_insertion_point(class_scope:greptime.v1.flow.DropRequest)
+    private static final io.greptime.v1.flow.Server.DropRequest DEFAULT_INSTANCE;
     static {
-      DEFAULT_INSTANCE = new io.greptime.v1.flow.Server.RemoveRequest();
+      DEFAULT_INSTANCE = new io.greptime.v1.flow.Server.DropRequest();
     }
 
-    public static io.greptime.v1.flow.Server.RemoveRequest getDefaultInstance() {
+    public static io.greptime.v1.flow.Server.DropRequest getDefaultInstance() {
       return DEFAULT_INSTANCE;
     }
 
-    private static final com.google.protobuf.Parser<RemoveRequest>
-        PARSER = new com.google.protobuf.AbstractParser<RemoveRequest>() {
+    private static final com.google.protobuf.Parser<DropRequest>
+        PARSER = new com.google.protobuf.AbstractParser<DropRequest>() {
       @java.lang.Override
-      public RemoveRequest parsePartialFrom(
+      public DropRequest parsePartialFrom(
           com.google.protobuf.CodedInputStream input,
           com.google.protobuf.ExtensionRegistryLite extensionRegistry)
           throws com.google.protobuf.InvalidProtocolBufferException {
-        return new RemoveRequest(input, extensionRegistry);
+        return new DropRequest(input, extensionRegistry);
       }
     };
 
-    public static com.google.protobuf.Parser<RemoveRequest> parser() {
+    public static com.google.protobuf.Parser<DropRequest> parser() {
       return PARSER;
     }
 
     @java.lang.Override
-    public com.google.protobuf.Parser<RemoveRequest> getParserForType() {
+    public com.google.protobuf.Parser<DropRequest> getParserForType() {
       return PARSER;
     }
 
     @java.lang.Override
-    public io.greptime.v1.flow.Server.RemoveRequest getDefaultInstanceForType() {
+    public io.greptime.v1.flow.Server.DropRequest getDefaultInstanceForType() {
       return DEFAULT_INSTANCE;
     }
 
@@ -7159,15 +7159,15 @@ public io.greptime.v1.flow.Server.TaskId getDefaultInstanceForType() {
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_greptime_v1_flow_CreateRequest_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_flow_CreateRequest_TaskOptionsEntry_descriptor;
+    internal_static_greptime_v1_flow_CreateRequest_FlowOptionsEntry_descriptor;
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_flow_CreateRequest_TaskOptionsEntry_fieldAccessorTable;
+      internal_static_greptime_v1_flow_CreateRequest_FlowOptionsEntry_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
-    internal_static_greptime_v1_flow_RemoveRequest_descriptor;
+    internal_static_greptime_v1_flow_DropRequest_descriptor;
   private static final 
     com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
-      internal_static_greptime_v1_flow_RemoveRequest_fieldAccessorTable;
+      internal_static_greptime_v1_flow_DropRequest_fieldAccessorTable;
   private static final com.google.protobuf.Descriptors.Descriptor
     internal_static_greptime_v1_flow_TaskId_descriptor;
   private static final 
@@ -7188,35 +7188,34 @@ public io.greptime.v1.flow.Server.TaskId getDefaultInstanceForType() {
       "o\"C\n\016InsertRequests\0221\n\010requests\030\001 \003(\0132\037." +
       "greptime.v1.flow.InsertRequest\"C\n\rInsert" +
       "Request\022\021\n\tregion_id\030\001 \001(\004\022\037\n\004rows\030\002 \001(\013" +
-      "2\021.greptime.v1.Rows\"{\n\013FlowRequest\0221\n\006cr" +
+      "2\021.greptime.v1.Rows\"w\n\013FlowRequest\0221\n\006cr" +
       "eate\030\001 \001(\0132\037.greptime.v1.flow.CreateRequ" +
-      "estH\000\0221\n\006remove\030\002 \001(\0132\037.greptime.v1.flow" +
-      ".RemoveRequestH\000B\006\n\004body\"\370\001\n\014FlowRespons" +
-      "e\022+\n\006header\030\001 \001(\0132\033.greptime.v1.Response" +
-      "Header\022\025\n\raffected_rows\030\002 \001(\004\022@\n\textensi" +
-      "on\030\003 \003(\0132-.greptime.v1.flow.FlowResponse" +
-      ".ExtensionEntry\0220\n\016affected_tasks\030\004 \003(\0132" +
-      "\030.greptime.v1.flow.TaskId\0320\n\016ExtensionEn" +
-      "try\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\350\002\n\r" +
-      "CreateRequest\022)\n\007task_id\030\001 \001(\0132\030.greptim" +
-      "e.v1.flow.TaskId\022.\n\020source_table_ids\030\002 \003" +
-      "(\0132\024.greptime.v1.TableId\022/\n\017sink_table_n" +
-      "ame\030\003 \001(\0132\026.greptime.v1.TableName\022\034\n\024cre" +
-      "ate_if_not_exists\030\004 \001(\010\022\023\n\013expire_when\030\005" +
-      " \001(\t\022\017\n\007comment\030\006 \001(\t\022\013\n\003sql\030\007 \001(\t\022F\n\014ta" +
-      "sk_options\030\010 \003(\01320.greptime.v1.flow.Crea" +
-      "teRequest.TaskOptionsEntry\0322\n\020TaskOption" +
-      "sEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\":" +
-      "\n\rRemoveRequest\022)\n\007task_id\030\001 \001(\0132\030.grept" +
-      "ime.v1.flow.TaskId\"\024\n\006TaskId\022\n\n\002id\030\001 \001(\r" +
-      "2\264\001\n\004Flow\022S\n\022HandleCreateRemove\022\035.grepti" +
-      "me.v1.flow.FlowRequest\032\036.greptime.v1.flo" +
-      "w.FlowResponse\022W\n\023HandleMirrorRequest\022 ." +
-      "greptime.v1.flow.InsertRequests\032\036.grepti" +
-      "me.v1.flow.FlowResponseBY\n\023io.greptime.v" +
-      "1.flowB\006ServerZ:github.com/GreptimeTeam/" +
-      "greptime-proto/go/greptime/v1/flowb\006prot" +
-      "o3"
+      "estH\000\022-\n\004drop\030\002 \001(\0132\035.greptime.v1.flow.D" +
+      "ropRequestH\000B\006\n\004body\"\370\001\n\014FlowResponse\022+\n" +
+      "\006header\030\001 \001(\0132\033.greptime.v1.ResponseHead" +
+      "er\022\025\n\raffected_rows\030\002 \001(\004\022@\n\textension\030\003" +
+      " \003(\0132-.greptime.v1.flow.FlowResponse.Ext" +
+      "ensionEntry\0220\n\016affected_tasks\030\004 \003(\0132\030.gr" +
+      "eptime.v1.flow.TaskId\0320\n\016ExtensionEntry\022" +
+      "\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\014:\0028\001\"\350\002\n\rCrea" +
+      "teRequest\022)\n\007flow_id\030\001 \001(\0132\030.greptime.v1" +
+      ".flow.TaskId\022.\n\020source_table_ids\030\002 \003(\0132\024" +
+      ".greptime.v1.TableId\022/\n\017sink_table_name\030" +
+      "\003 \001(\0132\026.greptime.v1.TableName\022\034\n\024create_" +
+      "if_not_exists\030\004 \001(\010\022\023\n\013expire_when\030\005 \001(\t" +
+      "\022\017\n\007comment\030\006 \001(\t\022\013\n\003sql\030\007 \001(\t\022F\n\014flow_o" +
+      "ptions\030\010 \003(\01320.greptime.v1.flow.CreateRe" +
+      "quest.FlowOptionsEntry\0322\n\020FlowOptionsEnt" +
+      "ry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"8\n\013Dr" +
+      "opRequest\022)\n\007flow_id\030\001 \001(\0132\030.greptime.v1" +
+      ".flow.TaskId\"\024\n\006TaskId\022\n\n\002id\030\001 \001(\r2\264\001\n\004F" +
+      "low\022S\n\022HandleCreateRemove\022\035.greptime.v1." +
+      "flow.FlowRequest\032\036.greptime.v1.flow.Flow" +
+      "Response\022W\n\023HandleMirrorRequest\022 .grepti" +
+      "me.v1.flow.InsertRequests\032\036.greptime.v1." +
+      "flow.FlowResponseBY\n\023io.greptime.v1.flow" +
+      "B\006ServerZ:github.com/GreptimeTeam/grepti" +
+      "me-proto/go/greptime/v1/flowb\006proto3"
     };
     descriptor = com.google.protobuf.Descriptors.FileDescriptor
       .internalBuildGeneratedFileFrom(descriptorData,
@@ -7242,7 +7241,7 @@ public io.greptime.v1.flow.Server.TaskId getDefaultInstanceForType() {
     internal_static_greptime_v1_flow_FlowRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_flow_FlowRequest_descriptor,
-        new java.lang.String[] { "Create", "Remove", "Body", });
+        new java.lang.String[] { "Create", "Drop", "Body", });
     internal_static_greptime_v1_flow_FlowResponse_descriptor =
       getDescriptor().getMessageTypes().get(3);
     internal_static_greptime_v1_flow_FlowResponse_fieldAccessorTable = new
@@ -7260,19 +7259,19 @@ public io.greptime.v1.flow.Server.TaskId getDefaultInstanceForType() {
     internal_static_greptime_v1_flow_CreateRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
         internal_static_greptime_v1_flow_CreateRequest_descriptor,
-        new java.lang.String[] { "TaskId", "SourceTableIds", "SinkTableName", "CreateIfNotExists", "ExpireWhen", "Comment", "Sql", "TaskOptions", });
-    internal_static_greptime_v1_flow_CreateRequest_TaskOptionsEntry_descriptor =
+        new java.lang.String[] { "FlowId", "SourceTableIds", "SinkTableName", "CreateIfNotExists", "ExpireWhen", "Comment", "Sql", "FlowOptions", });
+    internal_static_greptime_v1_flow_CreateRequest_FlowOptionsEntry_descriptor =
       internal_static_greptime_v1_flow_CreateRequest_descriptor.getNestedTypes().get(0);
-    internal_static_greptime_v1_flow_CreateRequest_TaskOptionsEntry_fieldAccessorTable = new
+    internal_static_greptime_v1_flow_CreateRequest_FlowOptionsEntry_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_flow_CreateRequest_TaskOptionsEntry_descriptor,
+        internal_static_greptime_v1_flow_CreateRequest_FlowOptionsEntry_descriptor,
         new java.lang.String[] { "Key", "Value", });
-    internal_static_greptime_v1_flow_RemoveRequest_descriptor =
+    internal_static_greptime_v1_flow_DropRequest_descriptor =
       getDescriptor().getMessageTypes().get(5);
-    internal_static_greptime_v1_flow_RemoveRequest_fieldAccessorTable = new
+    internal_static_greptime_v1_flow_DropRequest_fieldAccessorTable = new
       com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
-        internal_static_greptime_v1_flow_RemoveRequest_descriptor,
-        new java.lang.String[] { "TaskId", });
+        internal_static_greptime_v1_flow_DropRequest_descriptor,
+        new java.lang.String[] { "FlowId", });
     internal_static_greptime_v1_flow_TaskId_descriptor =
       getDescriptor().getMessageTypes().get(6);
     internal_static_greptime_v1_flow_TaskId_fieldAccessorTable = new
diff --git a/proto/greptime/v1/ddl.proto b/proto/greptime/v1/ddl.proto
index 5a2150e5..ef797d2c 100644
--- a/proto/greptime/v1/ddl.proto
+++ b/proto/greptime/v1/ddl.proto
@@ -33,15 +33,15 @@ message DdlRequest {
     AlterExpr alter = 3;
     DropTableExpr drop_table = 4;
     TruncateTableExpr truncate_table = 7;
-    CreateFlowTaskExpr create_flow_task = 8;
-    DropFlowTaskExpr drop_flow_task = 9;
+    CreateFlowExpr create_flow = 8;
+    DropFlowExpr drop_flow = 9;
   }
 }
 
-// Create a flow task to run the SQL when new data arrives.
-message CreateFlowTaskExpr {
+// Create a flow to run the SQL when new data arrives.
+message CreateFlowExpr {
   string catalog_name = 1;
-  string task_name = 2;
+  string flow_name = 2;
   repeated TableName source_table_names = 3;
   TableName sink_table_name = 4;
   bool or_replace = 5;
@@ -49,13 +49,13 @@ message CreateFlowTaskExpr {
   string expire_when = 7;
   string comment = 8;
   string sql = 9;
-  map<string, string> task_options = 10;
+  map<string, string> flow_options = 10;
 }
 
-// Remove a flow task.
-message DropFlowTaskExpr {
+// Drop a flow.
+message DropFlowExpr {
   string catalog_name = 1;
-  string task_name = 2;
+  string flow_name = 2;
 }
 
 message CreateTableExpr {
diff --git a/proto/greptime/v1/flow/server.proto b/proto/greptime/v1/flow/server.proto
index fe5089ba..0273cc4c 100644
--- a/proto/greptime/v1/flow/server.proto
+++ b/proto/greptime/v1/flow/server.proto
@@ -43,7 +43,7 @@ message InsertRequest {
 message FlowRequest {
   oneof body {
     CreateRequest create = 1;
-    RemoveRequest remove = 2;
+    DropRequest drop = 2;
   }
 }
 
@@ -55,21 +55,21 @@ message FlowResponse {
   repeated TaskId affected_tasks = 4;
 }
 
-// Create a flow task
+// Create a flow
 // 
 // Very similar to `ddl.CreateTaskExpr`, 
 // replace `source_table_names` with `source_table_ids`
 message CreateRequest {
-  TaskId task_id = 1; 
+  TaskId flow_id = 1; 
   repeated TableId source_table_ids = 2;
   TableName sink_table_name = 3;
   bool create_if_not_exists = 4;
   string expire_when = 5;
   string comment = 6;
   string sql = 7;
-  map<string, string> task_options = 8;
+  map<string, string> flow_options = 8;
 }
 
-message RemoveRequest { TaskId task_id = 1; }
+message DropRequest { TaskId flow_id = 1; }
 
 message TaskId { uint32 id = 1; }
diff --git a/proto/greptime/v1/meta/ddl.proto b/proto/greptime/v1/meta/ddl.proto
index c2ca420e..06133c09 100644
--- a/proto/greptime/v1/meta/ddl.proto
+++ b/proto/greptime/v1/meta/ddl.proto
@@ -60,11 +60,11 @@ message DropDatabaseTask {
 }
 
 message CreateFlowTask {
-    CreateFlowTaskExpr create_flow_task = 1;
+    CreateFlowExpr create_flow = 1;
 }
 
 message DropFlowTask {
-    DropFlowTaskExpr drop_flow_task = 1;
+    DropFlowExpr drop_flow = 1;
 }
 
 message DdlTaskRequest {