T-SQL Dynamic SQL and Temp Tables

Question

It looks like #temptables created using dynamic SQL via the EXECUTE string method have a different scope and can\'t be referenced by \"fixed\" SQLs in the same stored proced

Answer 1

Result sets from dynamic SQL are returned to the client. I have done this quite a lot.

You're right about issues with sharing data through temp tables and variables and things like that between the SQL and the dynamic SQL it generates.

I think in trying to get your temp table working, you have probably got some things confused, because you can definitely get data from a SP which executes dynamic SQL:

USE SandBox
GO

CREATE PROCEDURE usp_DynTest(@table_type AS VARCHAR(255))
AS 
BEGIN
    DECLARE @sql AS VARCHAR(MAX) = 'SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = ''' + @table_type + ''''
    EXEC (@sql)
END
GO

EXEC usp_DynTest 'BASE TABLE'
GO

EXEC usp_DynTest 'VIEW'
GO

DROP PROCEDURE usp_DynTest
GO

Also:

USE SandBox
GO

CREATE PROCEDURE usp_DynTest(@table_type AS VARCHAR(255))
AS 
BEGIN
    DECLARE @sql AS VARCHAR(MAX) = 'SELECT * INTO #temp FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = ''' + @table_type + '''; SELECT * FROM #temp;'
    EXEC (@sql)
END
GO

EXEC usp_DynTest 'BASE TABLE'
GO

EXEC usp_DynTest 'VIEW'
GO

DROP PROCEDURE usp_DynTest
GO