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SQLCMD uses OLEDB as a client interface
30 March,2022 by Tom Collins
Question: When the sqlcmd utility connects to a SQL Server ,what connection provider is used to interface with SQL Server ?
Answer: SQLCMD uses OLEDB as client interface. You can verify by checking the sys.dm_exec_sessions DMV
select * from sys.dm_exec_sessions where session_id > 50
You'll notice when the program = SQLCMD the client_interface_name = ODBC . When the program = Microsoft SQL Server Management Studio the client_interface_name = .Net SqlClient Data Provider
Why is this important ?
There are differences between ODBC and .Net Sql Client Data Provider .
1) SSMS uses the .Net SQLClient provider versus SQLCMD which executes across an ODBC provider . If you are troubleshooting a performance issue - it is a consideration in how you are testing code .
Read more on using sqlcmd
How to capture errors from SQLCMD
How to use a blank password with SQLCMD
Author: Tom Collins (http://www.sqlserver-dba.com)
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