FIX: A SQL Server CE CASE function that returns NULL leads to incorrect results or exception errors (829734)


The information in this article applies to:

  • Microsoft SQL Server 2000 Windows CE Edition 2.0
SQL Server CE:7977

SYMPTOMS

If you run a SELECT query that uses the CASE intrinsic function and a value after the THEN or the ELSE keyword is NULL, and the WHEN or the ELSE clause that is associated with the NULL value is the matched portion, the query may return incorrect results or cause an exception to occur.

WORKAROUND

To work around this problem, modify the query to avoid NULL values in the CASE function, or modify the query so that it does not rely on the CASE function.

RESOLUTION

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;[LN];CNTACTMS

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) 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 tool in Control Panel.
   Date         Time   Version     Size       File name
   --------------------------------------------------------------

   25-Sep-2003  16:50  2.0.5723.0  1,403,972  Ssce20.dll  ARM
Note Because of file dependencies, the most recent hotfix or feature that contains the files may also contain additional files.


STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section of this article.

REFERENCES

SQL Server CE 2.0 Books Online
Modification Type:MinorLast Reviewed:10/25/2005
Keywords:kbHotfixServer kbQFE kbfix kbbug KB829734 kbAudDeveloper
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