Article ID: 824028
Article Last Modified on 11/2/2007
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
SYMPTOMS
When you run a complex OUTER or SEMI JOIN query that involves hash joins on large data sets, or data sets that involve skewed distributions, you may receive incorrect results if the following conditions are true:
- SQL Server (in rare circumstances) decides to reverse the roles of the hash build and probe inputs.
- Subsequently, because the original build input is too large to fit in memory, it is spilled to disk.
- Finally, the role reversal is undone.
MORE INFORMATION
To validate the applicability of this fix to your scenario, check the following:
- Use SQL Profiler and capture the EventClass Execution Plan. Check to see if the query that is resulting in incorrect results is using the HASH operator.
- Use SQL Profiler and capture the EventClass Hash Warning and confirm that this event is raised. If so, make sure that the data column EventSubClass contains "Hash Recursion" (indicates spilling). For more information, see the "Errors and Warnings Event Classes" topic in SQL Server Books Online.
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 bytes Console.exe
25-Jun-2003 01:01 2000.80.818.0 33,340 bytes Dbmslpcn.dll
25-Apr-2003 02:12 786,432 bytes Distmdl.ldf
25-Apr-2003 02:12 2,359,296 bytes Distmdl.mdf
30-Jan-2003 01:55 180 bytes Drop_repl_hotfix.sql
23-Jun-2003 22:40 2000.80.837.0 1,557,052 bytes Dtsui.dll
23-Jun-2003 22:40 2000.80.837.0 639,552 bytes Dtswiz.dll
24-Apr-2003 02:51 747,927 bytes Instdist.sql
03-May-2003 01:56 1,581 bytes Inst_repl_hotfix.sql
08-Feb-2003 06:40 2000.80.765.0 90,692 bytes Msgprox.dll
01-Apr-2003 02:07 1,873 bytes Odsole.sql
05-Apr-2003 01:46 2000.80.800.0 62,024 bytes Odsole70.dll
07-May-2003 20:41 2000.80.819.0 25,144 bytes Opends60.dll
02-Apr-2003 21:48 2000.80.796.0 57,904 bytes Osql.exe
02-Apr-2003 23:15 2000.80.797.0 279,104 bytes Pfutil80.dll
22-May-2003 22:57 19,195 bytes Qfe469571.sql
12-Jun-2003 16:37 1,083,989 bytes Replmerg.sql
04-Apr-2003 21:53 2000.80.798.0 221,768 bytes Replprov.dll
08-Feb-2003 06:40 2000.80.765.0 307,784 bytes Replrec.dll
05-May-2003 00:05 1,085,874 bytes Replsys.sql
01-Jun-2003 01:01 2000.80.818.0 492,096 bytes Semobj.dll
31-May-2003 18:27 2000.80.818.0 172,032 bytes Semobj.rll
29-May-2003 00:29 115,944 bytes Sp3_serv_uni.sql
01-Jun-2003 01:01 2000.80.818.0 4,215,360 bytes Sqldmo.dll
07-Apr-2003 17:44 25,172 bytes Sqldumper.exe
19-Mar-2003 18:20 2000.80.789.0 28,672 bytes Sqlevn70.rll
02-Jul-2003 00:18 2000.80.834.0 180,736 bytes Sqlmap70.dll
08-Feb-2003 06:40 2000.80.765.0 57,920 bytes Sqlrepss.dll
07-Jul-2003 17:57 2000.80.839.0 7,549,009 bytes Sqlservr.exe
08-Feb-2003 06:40 2000.80.765.0 45,644 bytes Sqlvdi.dll
25-Jun-2003 01:01 2000.80.818.0 33,340 bytes Ssmslpcn.dll
01-Jun-2003 01:01 2000.80.818.0 82,492 bytes Ssnetlib.dll
01-Jun-2003 01:01 2000.80.818.0 25,148 bytes Ssnmpn70.dll
01-Jun-2003 01:01 2000.80.818.0 158,240 bytes Svrnetcn.dll
31-May-2003 18:59 2000.80.818.0 76,416 bytes Svrnetcn.exe
30-Apr-2003 23:52 2000.80.816.0 45,132 bytes Ums.dll
02-Jul-2003 00:19 2000.80.834.0 98,816 bytes Xpweb70.dll
Note Because of file dependencies, the most recent hotfix or feature that contains the files may also contain additional files.
WORKAROUND
To work around this problem, add an "OPTION (LOOP JOIN, MERGE JOIN)" query hint to the affected query.
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 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
Keywords: kbbug kbfix kbqfe kbsqlserv2000presp4fix kbhotfixserver KB824028
