Article ID: 224581 - View products that this article applies to.
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BUG #: 54366 (SQLBUG_70)
A query that contains a large number of predicates that are AND-ed together may cause a stack overflow exception. Several thousand conditions are typically required for this problem to occur, and you may reach a limit on the maximum batch size of your query tool before encountering this situation. Many query tools limit batches to 128 KB, whereas SQL Server 7.0 now accepts a batch size as large as (65536 * network packet size).
During optimization, memory for selectivity calculation was being allocated from the stack. This allocation depends on the number of nodes being AND-ed together and can result in a stack overflow.
To work around this problem, rewrite the query to reduce the number of AND conditions required. For example, you may be able to rewrite the query as a join.
Microsoft has confirmed this to be a problem in SQL Server 7.0. This problem has been corrected in U.S. Service Pack 1 for Microsoft SQL Server 7.0. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
232570For more information, contact your primary support provider.
(http://support.microsoft.com/kb/232570/ )INF: How to Obtain Service Pack 1 for Microsoft SQL Server 7.0 and Microsoft Data Engine (MSDE) 1.0
The SQL Server error log will contain an entry similar to the following when the exception occurs:
1999-04-01 16:22:13.78 spid7 04/01/99 16:22:13 Stack Overflow Dump not possible - Exception c00000fd E at 780348a4 1999-04-01 16:22:13.78 spid7 Address=780348a4 Exception Code = c00000fd 1999-04-01 16:22:13.78 spid7 eax=00000008 ebx=000d6558 ecx=00000008 edx=7804093a 1999-04-01 16:22:13.78 spid7 esi=00000001 edi=00000000 eip=780348a4 esp=02f82f38 1999-04-01 16:22:13.78 spid7 ebp=02f83208 efl=00010203 1999-04-01 16:22:13.78 spid7 cs=1b ss=23 ds=23 es=23 fs=3b gs=0 1999-04-01 16:22:13.78 spid7 Input Buffer 393228 bytes - ...<query text>... 1999-04-01 16:22:31.64 spid7 Error: 0, Severity: 19, State: 0 1999-04-01 16:22:31.64 spid7 language_exec: Process 7 generated an access violation. SQL Server is terminating this process.
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