FIX: Using Wildcard Operator '%' with LIKE May Produce Inconsistent Row Patterns

ID: Q237793

The information in this article applies to:

Microsoft SQL Server version 7.0

BUG #: 55911 (SQLBUG_70)

SYMPTOMS

Queries containing the LIKE operator in a where clause, using a wildcard search, concatenated with the base column value, on a column involved in an index may produce inconsistent row patterns.

The following query is an example of when this problem may occur:


SELECT *
FROM T1 A, T2 B 
WHERE B.T2ID LIKE A.T1ID +'%'
AND A.T1CHAR LIKE 'ABC%'

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:


   File name   Platform
   --------------------

   S70707i.exe (x86)
   S70707a.exe (Alpha)

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