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FIX: Complex Update Statement Returns 8624 Internal SQL Server Error

Article ID: 286249 - View products that this article applies to.

This article was previously published under Q286249

BUG #: 351305 (SHILOH_bugs)

SYMPTOMS

An UPDATE statement that contains a subquery, which selects from a derived table formed from a UNION ALL, may generate the following error message:

Server: Msg 8624, Level 16, State 21, Line 2
Internal SQL Server error.

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To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

290211

(http://support.microsoft.com/kb/290211/EN-US/ )

INF: HOw to Obtain the Latest SQL Server 2000 Service Pack

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WORKAROUND

If possible, rewrite the query by using only the UNION operator, without the ALL keyword.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft SQL Server 2000 Service Pack 1.

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MORE INFORMATION

To reproduce this error, run this script:

CREATE TABLE MaxCol(
PK INT PRIMARY KEY,
f1 INT,
f2 INT,
mx INT
)
GO

UPDATE MaxCol
SET mx =
    (SELECT MAX(f)
    FROM
        (
        SELECT f1 AS f
        FROM MaxCol AS A
        WHERE A.PK=MaxCol.PK
        UNION ALL
        SELECT f2
        FROM MaxCol AS B
        WHERE B.PK=MaxCol.PK
        ) AS TU
    )

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