Microsoft KB Archive/824018

= FIX: Parallel Query That Uses an Indexed bit Column May Return Results That Are Not Correct =

Article ID: 824018

Article Last Modified on 11/2/2007

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APPLIES TO


 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Standard Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Personal Edition
 * Microsoft SQL Server 2000 Enterprise Edition
 * Microsoft SQL Server 2000 Workgroup Edition
 * Microsoft SQL Server 2000 Desktop Engine (Windows)
 * Microsoft SQL Server 2000 Developer Edition
 * Microsoft SQL Server 2000 Enterprise Edition 64-bit

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BUG #: 469812 (SHILOH_BUGS)



SYMPTOMS
A query that performs a parallel scan of an index that has a bit column as a part of the index key may return results that are not correct. The query may return the wrong number of rows, or the aggregate calculations that are produced by functions such as SUM or COUNT may not be correct.



Service pack information
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 How to obtain the latest SQL Server 2000 service pack

Hotfix information
The following hotfix can only be applied to a computer that is running SQL Server 2000 Service Pack 3 (SP3) or a hotfix build that is based on SQL Server 2000 SP3.

The English version of this hotfix 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 ---  31-May-2003  18:45  2000.80.818.0      78,400  Console.exe 25-Jun-2003 01:01  2000.80.818.0      33,340  Dbmslpcn.dll 25-Apr-2003 02:12                    786,432  Distmdl.ldf 25-Apr-2003 02:12                  2,359,296  Distmdl.mdf 30-Jan-2003 01:55                        180  Drop_repl_hotfix.sql 23-Jun-2003 22:40  2000.80.837.0   1,557,052  Dtsui.dll 23-Jun-2003 22:40  2000.80.837.0     639,552  Dtswiz.dll 24-Apr-2003 02:51                    747,927  Instdist.sql 03-May-2003 01:56                      1,581  Inst_repl_hotfix.sql 08-Feb-2003 06:40  2000.80.765.0      90,692  Msgprox.dll 01-Apr-2003 02:07                      1,873  Odsole.sql 05-Apr-2003 01:46  2000.80.800.0      62,024  Odsole70.dll 07-May-2003 20:41  2000.80.819.0      25,144  Opends60.dll 02-Apr-2003 21:48  2000.80.796.0      57,904  Osql.exe 02-Apr-2003 23:15  2000.80.797.0     279,104  Pfutil80.dll 22-May-2003 22:57                     19,195  Qfe469571.sql 12-Jun-2003 16:37                  1,083,989  Replmerg.sql 04-Apr-2003 21:53  2000.80.798.0     221,768  Replprov.dll 08-Feb-2003 06:40  2000.80.765.0     307,784  Replrec.dll 05-May-2003 00:05                  1,085,874  Replsys.sql 01-Jun-2003 01:01  2000.80.818.0     492,096  Semobj.dll 31-May-2003 18:27  2000.80.818.0     172,032  Semobj.rll 29-May-2003 00:29                    115,944  Sp3_serv_uni.sql 01-Jun-2003 01:01  2000.80.818.0   4,215,360  Sqldmo.dll 07-Apr-2003 17:44                     25,172  Sqldumper.exe 19-Mar-2003 18:20  2000.80.789.0      28,672  Sqlevn70.rll 02-Jul-2003 00:18  2000.80.834.0     180,736  Sqlmap70.dll 08-Feb-2003 06:40  2000.80.765.0      57,920  Sqlrepss.dll 07-Jul-2003 17:57  2000.80.839.0   7,549,009  Sqlservr.exe 08-Feb-2003 06:40  2000.80.765.0      45,644  Sqlvdi.dll 25-Jun-2003 01:01  2000.80.818.0      33,340  Ssmslpcn.dll 01-Jun-2003 01:01  2000.80.818.0      82,492  Ssnetlib.dll 01-Jun-2003 01:01  2000.80.818.0      25,148  Ssnmpn70.dll 01-Jun-2003 01:01  2000.80.818.0     158,240  Svrnetcn.dll 31-May-2003 18:59  2000.80.818.0      76,416  Svrnetcn.exe 30-Apr-2003 23:52  2000.80.816.0      45,132  Ums.dll 02-Jul-2003 00:19  2000.80.834.0      98,816  Xpweb70.dll Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.



WORKAROUND
To work around this problem, remove the bit column from any indexes where it is a key column. Alternatively, you can also avoid the problem by changing the data type of the bit column to tinyint. Before you change a column's data type with an ALTER TABLE command, you must first drop any indexes that include the column. You can re-create the indexes after the column's data type has been changed.



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 4.

Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbhotfixserver KB824018

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