Using variable for table name

hello experts,

how can i use a variable for the table name?

declare @table_name varchar(2000)

set @table_name = 'mytable'

select *
  from @table_name

I would have thought it was that easy, but it wants me to declare the table variable.  i read up on table variables, and that talks about storing values...not wanting to do that.

thanks
thewayne73Asked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

TimCotteeHead of Software ServicesCommented:
Hello thewayne73,

declare @table_name varchar(2000)

set @table_name = 'mytable'

Exec ('select *
  from ' + @table_name)

Regards,

TimCottee
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
TimCotteeHead of Software ServicesCommented:
thewayne73,

You have to use Dynamic sql, in otherwords build your required statement as a string and then use exec() to actually execute the statement. Sql Server does not do direct macro replacement in the way you were thinking.

TimCottee
0
indianguru2Commented:

DECLARE @Query NVARCHAR(2000)
DECLARE @table_name VARCHAR(50)
SET @table_name = 'mytable'
 
SET @Query = 'SELECT  * FROM ' + @table_name
 
EXECUTE sp_executesql @Query

Open in new window

0
thewayne73Author Commented:
Thanks...i was creating dynamic sql..but that can end up looking nasty.  using this solution will work for most of what i am dong.

wayne
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2005

From novice to tech pro — start learning today.