How to Insert Stored Procedure Results into a Temporary Table Without Defining its Structure?

Inserting Stored Procedure Results into a Temporary Table Without Pre-defining Structure

Problem: How can you populate a temporary table with the results of a stored procedure without explicitly defining the table schema beforehand?

Solution: Leverage the OPENROWSET function. This function executes a remote query and directly inserts the results into a temporary table, dynamically inferring the table structure from the query's output.

Here's an example:

-- Sample Stored Procedure
CREATE PROC getBusinessLineHistory
AS
BEGIN
    SELECT * FROM sys.databases
END
GO

-- Enable Ad Hoc Distributed Queries (required for OPENROWSET)
sp_configure 'Show Advanced Options', 1
GO
RECONFIGURE
GO
sp_configure 'Ad Hoc Distributed Queries', 1
GO
RECONFIGURE
GO

-- Insert results into temporary table using OPENROWSET
SELECT * INTO #MyTempTable FROM OPENROWSET('SQLNCLI', 'Server=(local)\SQL2008;Trusted_Connection=yes;',
     'EXEC getBusinessLineHistory')

-- Verify the data
SELECT * FROM #MyTempTable

This code first defines a sample stored procedure (getBusinessLineHistory). Crucially, it then enables "Ad Hoc Distributed Queries" using sp_configure. This is a prerequisite for using OPENROWSET.

OPENROWSET executes the stored procedure remotely, and the returned data is automatically inserted into #MyTempTable. The temporary table's structure is dynamically created based on the data types returned by the stored procedure. Finally, a SELECT statement confirms the data's successful insertion. This approach avoids the need to manually define the temporary table's schema.

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