Microsoft KB Archive/247019

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Knowledge Base

Article ID: 247019

Article Last Modified on 3/14/2006


  • Microsoft SQL Server 7.0 Standard Edition

This article was previously published under Q247019

BUG #: 55656 (SQLBUG_70)


An access violation (AV) is caused when an ALTER TABLE statement is run to add a CHECK constraint and if the constraint definition contains the ESCAPE keyword. An error message similar to the following appears.

ODBC: Msg 0, Level 19, State 1
SqlDumpExceptionHandler: Process 7 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.

Connection Broken

Avoid using the ESCAPE keyword when defining CHECK constraints.


Microsoft has confirmed this to be a problem in SQL Server 7.0. This problem has been corrected in U.S. Service Pack 2 for Microsoft SQL Server 7.0. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

254561 INF: How to Obtain Service Pack 2 for Microsoft SQL Server 7.0 and Microsoft Data Engine (MSDE) 1.0

For more information, contact your primary support provider.


Steps to Reproduce the Problem

The following script demonstrates the problem.

create table abc (col1 varchar(10))
alter table abc add constraint chk1 check (col1 like '~_xyz' escape '~')

Additional query words: gpf gp fault

Keywords: kbbug kbfix KB247019