Microsoft KB Archive/246598

= FIX: Columns Listed Multiple Times in GROUP BY WITH CUBE Clause Cause Access Violation =

Article ID: 246598

Article Last Modified on 3/14/2006

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APPLIES TO


 * Microsoft SQL Server 7.0 Standard Edition

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This article was previously published under Q246598



BUG #: 53838 (SQLBUG_70)



SYMPTOMS
When the same column is listed multiple times in a GROUP BY clause that uses the CUBE operator, you may receive the following Access Violation (AV) error message:

ODBC: Msg 0, Level 19, State 1

SqlDumpExceptionHandler: Process 7 generated fatal exception c0000005 EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.

[Microsoft][ODBC SQL Server Driver][TCP/IP Sockets]ConnectionCheckForData ((null)).

[Microsoft][ODBC SQL Server Driver][TCP/IP Sockets]General network error. Check your network documentation.

Connection Broken



WORKAROUND
Use table aliases and qualify the multiple instances of the column in the GROUP BY clause with the aliases.



STATUS
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
Query 1 demonstrates the problem while Query 2 uses table aliases to work around the problem.

Query 1
USE tempdb GO DROP TABLE t1 GO CREATE TABLE t1(c1 INT) GO SELECT c1 FROM t1 GROUP BY c1, c1, c1, c1 WITH CUBE GO

Query 2
USE tempdb GO DROP TABLE t1 go CREATE TABLE t1(c1 INT) GO SELECT a.c1 FROM t1 a, t1 b, t1 c, t1 d GROUP BY a.c1, b.c1, c.c1, d.c1 WITH CUBE GO

Keywords: kbbug kbfix KB246598

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