BUG: Queries Using Derived Tables or GROUP BY May Cause an AV

• Microsoft SQL Server, version 6.5

SYMPTOMS

In rare cases, queries that require SQL Server to re-map columns to virtual tables may cause SQL Server to have a handled access violation (AV). This has only been observed when either of the following conditions us true:

• Derived tables are used.

  -or-

• A GROUP BY clause is used and the data being grouped comes from a view.

WORKAROUND

To work around this problem, do either of the following:

• If the problem occurs with derived tables, change the query to avoid the use of a derived table. This may include creating a temporary table to represent the derived table and using it in your query instead.

  -or-

• If the problem occurs with a GROUP BY clause, you must remove the GROUP BY and implement it in another way, possibly with the use of temporary tables.

STATUS

Microsoft has confirmed this to be a problem in SQL Server version 6.5. A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.

Keywords          : kbbug6.50 SSrvGen
Version           : WINNT:6.5
Platform          : winnt
Issue type        : kbbug
Solution Type     : kbfix