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update table using parameter variable


update table using parameter variable

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hi

i have a stored proc which is used to make updates and inserts to a table passed in as a string variable.

so...



create proc myproc (@basetable as varchar(255))
as
-- update
update @baseTable
set Quantity = s.Quantity
from @baseTable p, @stageTbl s
where p.TimeKey = s.TimeKey and p.AccountId = s.AccountId and p.StockId=s.StockId



...but i get the following error: Must declare the table variable "@baseTable"

can i do this without using dynamic sql?

thanks
Aram Koukia
Aram Koukia
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No, you cannot use it like that
you are going to have to use Dynamic SQL and exec command to accomplish this type of commands

Aram Koukia: http://www.koukia.ca
PravB4u
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DECLARE @sql varchar(max)
SET @sql = 'Update '+ @baseTable +' set Quantity = s.Quantity
from ' + @baseTable +' p , '+ @stageTbl +' s
where p.TimeKey = s.TimeKey and p.AccountId = s.AccountId and p.StockId=s.StockId'
EXEC (@sql)





Praveen D'sa
MCITP - Database Administrator 2008
http://sqlerrors.wordpress.com
John Mitchell-245523
John Mitchell-245523
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Make sure you read and understand this before you try anything like that.

John
Jeff Moden
Jeff Moden
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PravB4u (12/10/2013)

DECLARE @sql varchar(max)
SET @sql = 'Update '+ @baseTable +' set Quantity = s.Quantity
from ' + @baseTable +' p , '+ @stageTbl +' s
where p.TimeKey = s.TimeKey and p.AccountId = s.AccountId and p.StockId=s.StockId'
EXEC (@sql)



Just to emphasize what John Mitchell posted above...

This is actually some of the most dangerous code in the whole world because it concatenates user input. Please do a search on SQL Injection both in Books Online and on the web.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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