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BUG #: 55906 (SQLBUG_70)
Running an INSERT SELECT statement into a table that has a clustered index, in which all fields allow NULLs, may fail with the following error message:
This error only occurs if all of the following conditions are met:
Server: Msg 8623, Level 16, State 2, Line 5 Internal Query Processor Error: The query processor could not produce a query plan.
When generating the plan for the sort with a single thread, the optimizer code does not expect NULL values for all of the fields to be sorted.
To work around this issue, choose any of the following options:
Microsoft has confirmed this to be a problem in SQL Server 7.0. This problem has been corrected in U.S. Service Pack 2 for Microsoft SQL Server 7.0. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
254561For more information, contact your primary support provider.
(http://support.microsoft.com/kb/254561/ )INF: How to Obtain Service Pack 2 for Microsoft SQL Server 7.0 and Microsoft Data Engine (MSDE) 1.0
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