Article ID: 821688
Article Last Modified on 10/25/2005
APPLIES TO
- Microsoft SQL Server 2000 Service Pack 3
Bug #: 469608 (SQL Server 8.0)
Microsoft distributes hotfixes for Microsoft SQL Server 2000 as one downloadable file. Because these fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2000 hotfix release.
SYMPTOMS
When you run a query that references a derived table or a view that is defined by a query that contains a LEFT OUTER JOIN clause, the query execution plan may display an incorrect row count estimate for the filter condition in the query. This problem may occur if the filter condition in the query references a column that is involved in the LEFT OUTER JOIN condition in the derived table query or in the view definition query.
Note This is a regression in SQL Server 2000 Service Pack 3 (SP3).
RESOLUTION
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 English version of this hotfix has the file attributes (or later file attributes) 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 15-Jul-2003 16:11 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 07-Apr-2003 19:15 2000.80.801.0 1,557,052 Dtsui.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 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 04-Apr-2003 21:27 1,083,467 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 24-Apr-2003 05:39 2000.80.811.0 176,696 Sqlmap70.dll 08-Feb-2003 06:40 2000.80.765.0 57,920 Sqlrepss.dll 01-Jun-2003 01:02 2000.80.818.0 7,544,916 Sqlservr.exe 08-Feb-2003 06:40 2000.80.765.0 45,644 Sqlvdi.dll 15-Jul-2003 16:11 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 28-Feb-2003 01:34 2000.80.778.0 98,872 Xpweb70.dll
Note Because of file dependencies, the most recent hotfix or feature that contains these 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.This problem was first corrected in Microsoft SQL Server 2000 Service Pack 4.
MORE INFORMATION
For this hotfix to take effect, you must enable SQL Server trace flag 9210. To enable a trace flag for an instance of SQL Server, use one of the following methods:
Run the following Transact-SQL statement on the instance of SQL Server:
DBCC TRACEON (9210)
Set the trace flag 9210 as a server-wide trace flag by using the -T startup parameter in SQL Server. To do so, run the following command at a command prompt:
sqlservr –d"Full path of the Master.mdf file for the instance of SQL Server" –T9210
REFERENCES
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
830887 FIX: Some queries that have a left outer join and an IS NULL filter run slower after you install SQL Server 2000 post-SP3 hotfix
Keywords: kbbug kbfix kbperformance kbview kbqfe kbdatabase kbsqlserv2000presp4fix kbquery kbhotfixserver KB821688
