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Dynamic DB

Author

Topic

just.net
Starting Member

24 Posts

Posted - 2010-09-21 : 04:04:38

Hi,
I want to do something like this:

ALTER PROCEDURE [dbo].[GetTest]
@DB varchar(max)
AS
BEGIN
SET NOCOUNT ON;
SELECT [id]
,[date_start]
,[date_end]
,[total_nights]
,[first_name]
,[last_name]
,[rate_code]
,[user_email]
FROM [@DB].[dbo].[Report]
END

how can i selcet from another DB by parmater ?

senthil_nagore
Master Smack Fu Yak Hacker

1007 Posts

Posted - 2010-09-21 : 04:19:38

Read about Dynamic Sql.

http://www.sommarskog.se/dynamic_sql.html

Senthil.C
------------------------------------------------------
[Microsoft][ODBC SQL Server Driver]Operation canceled

http://senthilnagore.blogspot.com/

senthil_nagore
Master Smack Fu Yak Hacker

1007 Posts

Posted - 2010-09-21 : 04:21:24

ALTER PROCEDURE [dbo].[GetTest]
@DB varchar(max)
AS
BEGIN
SET NOCOUNT ON;

Declare @sql varchar(max)

Set @sql='
SELECT [id]
,[date_start]
,[date_end]
,[total_nights]
,[first_name]
,[last_name]
,[rate_code]
,[user_email]
FROM ' +@DB +'.[dbo].[Report]'

-- print @sql

Exec (@sql)
END

Senthil.C
------------------------------------------------------
[Microsoft][ODBC SQL Server Driver]Operation canceled

http://senthilnagore.blogspot.com/

Transact Charlie
Master Smack Fu Yak Hacker

3451 Posts

Posted - 2010-09-21 : 04:31:04

Senthil - Nagore.

Maybe you should read the link you posted.

Dynamic sql like this is unsafe. You are not validating the input at all.

Charlie
===============================================================
Msg 3903, Level 16, State 1, Line 1736
The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION

senthil_nagore
Master Smack Fu Yak Hacker

1007 Posts

Posted - 2010-09-21 : 04:36:36

quote:
Originally posted by Transact Charlie

Senthil - Nagore.

Maybe you should read the link you posted.

Dynamic sql like this is unsafe. You are not validating the input at all.

Charlie
===============================================================
Msg 3903, Level 16, State 1, Line 1736
The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION

Ya i aware what you mention! need to validate the input!

here considering the input was valid!

Senthil.C
------------------------------------------------------
[Microsoft][ODBC SQL Server Driver]Operation canceled

http://senthilnagore.blogspot.com/

just.net
Starting Member

24 Posts

Posted - 2010-09-21 : 04:45:20

Thank you all.

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