FIX: SQL 7.0 Slower than SQL 6.5 on Join with View Containing CASE and Subquery

ID: Q247191

The information in this article applies to:

Microsoft SQL Server version 7.0

BUG #: 56580 (SQLBUG_70)

SYMPTOMS

Infrequently SQL 7.0 can be slower than SQL 6.5 on certain joins with a complex View that contains a CASE statement and subquery.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific problem, Microsoft recommends that you wait for the next SQL Server service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:



   Date         Time     Version    Size        File name      Platform
   --------------------------------------------------------------------

   10/26/1999   11:07a   7.00.740   15,754,978   S70740A.EXE   Alpha
   10/26/1999   10:37a   7.00.740    9,451,673   S70740I.EXE   Intel

NOTE: Due to file dependencies, the most recent hotfix or feature that contains the above files may also contain additional files.

STATUS

Microsoft has confirmed this to be a problem in SQL Server version 7.0.

Additional query words:

Keywords : kbSQLServ700bug
Version : winnt:7.0
Platform : winnt
Issue type : kbbug