fixed race condition causing incorrect IDs to be reported on INSERT

Author: bitmage

lib/mssql.js

@@ -152,9 +152,11 @@ MsSQL.prototype.create = function (model, data, callback) {
   //debugger;
   var fieldsAndData = this.buildInsert(model, data);
   var tblName = this.tableEscaped(model);
-  var sql = "INSERT INTO " + tblName + " (" + fieldsAndData.fields + ")" + MsSQL.newline;
+  var sql = "BEGIN TRAN;" + MsSQL.newline;
+  sql += "INSERT INTO " + tblName + " (" + fieldsAndData.fields + ")" + MsSQL.newline;
   sql += "VALUES (" + fieldsAndData.paramPlaceholders + ");" + MsSQL.newline;
-  sql += "SELECT IDENT_CURRENT('" + tblName + "') AS insertId;";
+  sql += "SELECT IDENT_CURRENT('" + tblName + "') AS insertId;" + MsSQL.newline;
+  sql += "COMMIT TRAN;";
 
   this.query(sql, fieldsAndData.params, function (err, results) {
     if (err) {