Microsoft KB Archive/152353

= FIX: Select with CASE Statement Inside View Can Cause Client AV =

Article ID: 152353

Article Last Modified on 10/16/2003

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APPLIES TO


 * Microsoft SQL Server 6.0 Standard Edition
 * Microsoft SQL Server 6.5 Standard Edition

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This article was previously published under Q152353





SYMPTOMS
A View that has a Select statement with a CASE construct that does a sub- select with an IN clause may cause the client to access violate (AV) during a Select from the View.

The following sample is the problem View definition:

create view MyView as  Select   Column1, Column2= Case When SomeColumn In           (Select  SomeOtherColumn              From   SomeOtherTable) Then SomeValue Else Null End From MyTable

A Select from MyView may cause the client to access violate.



WORKAROUND
Try to avoid the CASE construct inside a View Definition or perform some pre-processing for the CASE logic before the View Definition by using the IF-ELSE construct and Temporary Tables, and then define the View on the Temporary Table.



STATUS
Microsoft has confirmed this to be a problem in Microsoft SQL Server versions 6.0 and 6.5. This problem has been corrected in U.S. Service Pack 1 for Microsoft SQL Server version 6.5. For more information, contact your primary support provider.

Keywords: kbbug kbfix kbnetwork kbprogramming KB152353

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