BUG: AV May Occur With Invalid String in LIKE Clause

ID: Q149321

The information in this article applies to:

Microsoft SQL Server version 6.0

BUG#: 14348 (6.00)

SYMPTOMS

A simple SELECT statement with an invalid string in the LIKE clause can generate an access violation, instead of giving a syntax error.

WORKAROUND

Use only valid strings.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SQL Server version 6.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

If the string is 'x'%'x' you will get the AV, but if you have 'x'x'%' or 'x'_'%', you will get the syntax error as expected. The problem can be reproduced by using the following scenario:


   create table av (x char(20))
   go
   select * from av where x like 'x'%'y'

Additional query words: sql6 char strings


Keywords          : kbprg SSrvProg SSrvTran_SQL kbbug6.00 
Version           : 6.0
Platform          : WINDOWS 
Issue type        :

Last Reviewed: March 24, 1999