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T-SQL sql server 2005 execute command by passing a  variable

Posted on 2010-09-21
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Last Modified: 2012-05-10
I would like to execute simple commands such as the following:

delete @tablename
insert into @tablename .......

where @tablename is a varchar  parameter I pass to the stored procedure.

How can i do this
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Question by:adimit
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3 Comments
 
LVL 58

Accepted Solution

by:
cyberkiwi earned 2000 total points
ID: 33729738
You need to generate dynamic SQL Statements.

Mandatory BIG warning : do read up on "SQL Injection" (search on Google) before you proceed if you are using dynamic SQL with user input, but it does not look like the case here.

Something like this:

create proc mySP
@tablename sysname
as
declare @sql nvarchar(max)
set @sql = 'delete ' + @tablename -- everything
exec (@sql)
set @sql = 'insert into ' + @tablename + ' (col) values (val)'
exec (@sql)
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LVL 4

Expert Comment

by:timexist
ID: 33729855
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Author Closing Comment

by:adimit
ID: 33729918
thank you, I was missing the parentheses around the variable name in the exec command
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