The only way to accomplish this is by building your SQL as a string and
then running the query with the EXEC command. However, this completely
disables the server's ability to precompile the query, so it eliminates
the optimization you normally receive from a stored procedure. The CASE
statement is only valid within a SELECT clause, so your example won't
work.
You can lead a horse to water, but if you can get him to swim on his back,
you've got something.
"Bosky, Dave" <[EMAIL PROTECTED]>
03/03/2003 03:17 PM
Please respond to sql
To: SQL <[EMAIL PROTECTED]>
cc:
Subject: Creating a MSSQL dynamic where clause
I want to pass in a variable and use it to decide which where clause to
execute.
The problem lies within my case statement somewhere. This is one of my
first
attempts at creating a stored procedure in MSSQL. Would there be a better
way
to do it?
------------------------------
CREATE PROCEDURE dbo.Supply
@Opt int,
@item_id varchar (26) = NULL,
@item_descp varchar (35)= NULL,
@commodity_code char (4) = NULL,
@Stock varchar (8) = NULL
AS
SELECT site_id,usage_code,item_id,item_descp,commodity_code,on_hand_qty
FROM dbo.tbl_net_engr
WHERE item_id like '%' + COALESCE(@item_id,item_id) + '%'
AND item_descp like '%' +COALESCE(@item_descp,item_descp) + '%'
AND commodity_code like '%' + COALESCE(@commodity_code,commodity_code) +
'%'
CASE
WHEN @Stock='InStock' THEN AND on_hand_qty GT 0
WHEN @Stock='OutStock' THEN AND on_hand_qty = 0
WHEN @Stock='AllStock' THEN AND on_hand_qty => 0
END
---------------------------------
Regards,
Dave Bosky
Sr. Multimedia Web Designer
Horry Telephone Cooperative, Inc.
office: (843)369-8613
[EMAIL PROTECTED]
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