using a local variable in the USE statement

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using a local variable in the USE statement

tac

SSC Rookie

Points: 34
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March 2, 2004 at 5:28 pm

#178697

Hi,
I'm trying to use a local variable in the USE statement but can't seem to get the correct syntax.
Here's what I'm trying ---
declare @db SYSNAME
set @db =
(select TOP 1 Name from dbo.sysdatabases
where name like 'CCM%'
order by crdate DESC )
USE @db
select * from [dbo].[device]

There are several databases stored on the server begining with CCM ( CCM0301, CCM0302, etc). I need the data from the most recent one.
Thanks,
Tom

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Jeff Moden SSC Guru Points: 1004392 More actions · Answer 1

Tac,

Haven't tested this but should (may?) work...

declare @db SYSNAME
set @db =
(select TOP 1 Name from dbo.sysdatabases
where name like 'CCM%'
order by crdate DESC )
EXEC ('USE '+ @db)
select * from [dbo].[device]

--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.

Change is inevitable... Change for the better is not.

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