Microsoft KB Archive/921536

= FIX: A handled access violation may occur in the CValSwitch::GetDataX function when you run a complex query in SQL Server 2005 =

Article ID: 921536

Article Last Modified on 11/20/2007

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APPLIES TO


 * Microsoft SQL Server 2005 Standard Edition
 * Microsoft SQL Server 2005 Enterprise Edition
 * Microsoft SQL Server 2005 Developer Edition
 * Microsoft SQL Server 2005 Standard X64 Edition
 * Microsoft SQL Server 2005 Standard Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Enterprise X64 Edition
 * Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems

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Bug: #906 (SQL Hotfix)



Notice
Microsoft distributes Microsoft SQL Server 2005 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release.



This article describes the following about this hotfix release:
 * The issues that are fixed by this hotfix package
 * The prerequisites for installing the hotfix package
 * Information about whether you must restart the computer after you install the hotfix package
 * Information about whether the hotfix package is replaced by any other hotfix package
 * Information about whether you must make any registry changes
 * The files that are contained in the hotfix package



SYMPTOMS
When you run a complex query in SQL Server 2005, a handled access violation may occur in the CValSwitch::GetDataX function. Additionally, error messages that resemble the following are written to the SQL Server Errorlog file:

Error message 1



Error message 1



Error message 1

SQL Server is terminating this process.

This problem occurs if the following conditions are true:
 * The query contains an outer join on two or more tables.
 * The query contains a WHERE clause that filters the results from an inner table of the outer join.



RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must have SQL Server 2005 Service Pack 1 (SP1) installed to apply this hotfix.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

913089 How to obtain the latest service pack for SQL Server 2005

Restart information
You do not have to restart the computer after you apply this hotfix.

Registry information
You do not have to change the registry.

Hotfix file information
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain of all the files that you must have to fully update a product to the latest build.

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

SQL Server 2005 Itanium architecture version


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
The following call stack information is in the minidump file that is generated by SQL Server:

6284f60c 01033192 sqlservr!CValSwitch::GetDataX+0x10 6284f61c 01021266 sqlservr!GetData+0x1b 6284f694 01356ad4 sqlservr!CEs::GeneralEval4+0x8e 6284f6a4 01356b10 sqlservr!CQScanFilterNew::GetRowHelper+0x77 6284f6b8 0103761a sqlservr!CQScanFilterNew::GetRow+0x15 6284f6d4 010346a7 sqlservr!CQueryScan::GetRow+0x5a 6284f6f0 010345b8 sqlservr!CXStmtQuery::InitForExecute+0x51 6284f7a4 010349a6 sqlservr!CXStmtQuery::ErsqExecuteQuery+0x291 6284f824 010251bc sqlservr!CXStmtSelect::XretExecute+0x316 6284f8b8 01025741 sqlservr!CMsqlExecContext::ExecuteStmts<1,1>+0x360 6284f964 01023e34 sqlservr!CMsqlExecContext::FExecute+0x55b 6284fa24 01041dd5 sqlservr!CSQLSource::Execute+0x73b 6284fb9c 0103dfd4 sqlservr!process_request+0x2e3 6284fd54 01006a96 sqlservr!process_commands+0x2e0 6284fdc4 01006bbc sqlservr!SOS_Task::Param::Execute+0xe2 6284fdf8 01006dab sqlservr!SOS_Scheduler::RunTask+0xb9 6284fe38 01447562 sqlservr!SOS_Scheduler::ProcessTasks+0x141 6284fea0 0144859b sqlservr!SchedulerManager::WorkerEntryPoint+0x1a8 6284feb8 0144789a sqlservr!SystemThread::RunWorker+0x7f 6284ff10 01447720 sqlservr!SystemThreadDispatcher::ProcessWorker+0x225 6284ff78 781329aa sqlservr!SchedulerManager::ThreadEntryPoint+0x143 6284ffb0 78132a36 msvcr80!_callthreadstartex+0x1b 6284ffb8 77e66063 msvcr80!_threadstartex+0x66 6284ffec 00000000 kernel32!BaseThreadStart+0x34

For more information about the naming schema for Microsoft SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:

822499 New naming schema for Microsoft SQL Server software update packages

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbtshoot kbfix kbqfe kbpubtypekc kbexpertiseadvanced kbhotfixserver kbsql2005engine KB921536

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