Usage of LIMIT clause to fetch column names incompatible with sql server

System information

• OS Platform and Distribution (Windows 10 Enterprise (10.0)):
• Modin version (0.11.0`):
• Python version:3.9.5
• Sql Server version: Microsoft SQL Server Express (64-bit) version 15.0.2000.5
• Code we can use to reproduce:

Describe the problem

Modin uses Limit to get column names. This is not standard sql and is not supported by sql server. Sql_dispatcher.py line number 85 cols_names_df = pandas.read_sql( “SELECT * FROM ({}) as foo LIMIT 0”.format(sql), con, index_col=index_col )

The sql produced by the above line throws an error when used with sqlalchemy connection string. ERROR 2021-10-07 14:16:37,560 17756 21468 apriori.py get_recommendation 278 <class ‘sqlalchemy.exc.ProgrammingError’> (pyodbc.ProgrammingError) (‘42000’, “[42000] [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Incorrect syntax near ‘LIMIT’. (102) (SQLExecDirectW)”) [SQL: SELECT * FROM ({sql_query}) as foo LIMIT 0]

Source code / logs

[mvashishtha]

Yes, #4279 resolves this issue.

[YarShev]

Should this be closed in #4279?