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

ID: Q246598

The information in this article applies to:

Microsoft SQL Server version 7.0

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 version 7.0.

MORE INFORMATION

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

Additional query words:

Keywords : kbbug7.00 kbDSupport
Version : winnt:7.0
Platform : winnt
Issue type : kbbug