FIX: Access Violation in a UNION Operation on a View with a NOTLast reviewed: July 30, 1997Article ID: Q171868  | 
	
	
 
 
The information in this article applies to:
 
 SYMPTOMSA view that involves a UNION of two simple SELECT operations may cause an access violation (AV) when selected from, if one of the operands involves a SELECT with a NOT IN condition, as shown below: 
 select x from tbl1 union select x from tbl2 where x not in (select x from tbl1) WORKAROUNDTo work around this problem, avoid using NOT IN with a subquery. 
 STATUSMicrosoft has confirmed this to be a problem in Microsoft SQL Server versions 6.5 and 6.5 Service Pack 1. This problem has been corrected in U.S. Service Pack 2 for Microsoft SQL Server version 6.5. For more information, contact your primary support provider. 
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	Additional query words: gpf 6.5.201 sp sp1 
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