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Table Names as Parameters for Stored Procedures

Posted on 1998-08-07
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Last Modified: 2010-03-19
   How do I pass a table name as a parameter to a stored procedure? When I use variables passed as parameters in most contexts, I have no problem(i.e. Select * from Titles Where L_Name Like @lastName). But I can't find a way to use variables in the 'From' clause(i.e. Select * from @tableName).
   I've been able to build Sql strings and execute them using the 'exec' command, but with this approach I'm unable to use the results of the dynamically executed query in the continuation of my stored procedure.
 
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Question by:tgoglia
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6 Comments
 

Author Comment

by:tgoglia
ID: 1089452
Edited text of question
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Expert Comment

by:mitek
ID: 1089453
Short answer: EXEC is the only way. You can't do something like
SELECT * FROM @table_name (i wish it were possible)

Yet, you CAN get results from EXEC. That's just nontrivial.

BTW, i wouldn't call it an easy question ...

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Expert Comment

by:mitek
ID: 1089454
Short answer: EXEC is the only way. You can't do something like
SELECT * FROM @table_name (i wish it were possible)

Yet, you CAN get results from EXEC. That's just nontrivial.

BTW, i wouldn't call it an easy question ...

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mitek earned 50 total points
ID: 1089455
Try this:

DECLARE @01 varchar(255)
CREATE TABLE #temp(sid int,fname varchar(10))
SELECT @01 = 'SELECT 1,''TEST''' -- dynamic SELECT statement
INSERT INTO #temp EXEC(@01) -- will work for MS SQL 6.5 and higher
SELECT * FROM #temp
DROP TABLE #temp -- optional. the temp table will be dropped automatically when the sp finishes

That's one of very few ways I know of (in MS SQL) to do the thing you are talking about. I doubt that there are lots of other ways to do that ...
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Author Comment

by:tgoglia
ID: 1089456
Thanks for the help. I was thinking of that as a possible solution, but it seemed like such a complicated solution to a problem that I thought was simple. I'm new to the bulletin board/newsgroup thing, so sorry if I underrated my question. Is there a remedy?
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Expert Comment

by:mitek
ID: 1089457
Never mind :)
I would have answered it even if it was only 10 points ...
Besides, it didn't take much time to answer it :)
 
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