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add TIMESTAMP_NTZ for databricks #780

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Nov 21, 2023
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add TIMESTAMP_NTZ for databricks #780

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4 changes: 3 additions & 1 deletion data_diff/databases/databricks.py
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ class Dialect(BaseDialect):
"DECIMAL": Decimal,
# Timestamps
"TIMESTAMP": Timestamp,
"TIMESTAMP_NTZ": Timestamp,
# Text
"STRING": Text,
# Boolean
Expand Down Expand Up @@ -89,7 +90,8 @@ def normalize_timestamp(self, value: str, coltype: TemporalType) -> str:
"""Databricks timestamp contains no more than 6 digits in precision"""

if coltype.rounds:
timestamp = f"cast(round(unix_micros({value}) / 1000000, {coltype.precision}) * 1000000 as bigint)"
# cast to timestamp due to unix_micros() requiring timestamp
timestamp = f"cast(round(unix_micros(cast({value} as timestamp)) / 1000000, {coltype.precision}) * 1000000 as bigint)"
return f"date_format(timestamp_micros({timestamp}), 'yyyy-MM-dd HH:mm:ss.SSSSSS')"

precision_format = "S" * coltype.precision + "0" * (6 - coltype.precision)
Expand Down