How do I return an empty result set from a procedure using T-SQL?
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Published on 2010-05-09T00:56:21Z
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I'm interested in returning an empty result set from SQL Server stored procedures in certain events.
The intended behaviour is that a L2SQL DataContext.SPName().SingleOrDefault() will result in CLR null value.
I'm presently using the following solution, but I'm unsure whether it would be considered bad practice, a performance hazard (I could not find one by reading the execution plan), or if there is simply a better way:
SELECT * FROM [dbo].[TableName]
WHERE 0 = 1;
The execution plan is a constant scan with a trivial cost associated with it.
The reason I am asking this instead of simply not running any SELECTs is because I'm concerned previous SELECT @scalar or SELECT INTO statements could cause unintended result sets to be served back to L2SQL. Am I worrying over nothing?
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