Microsoft KB Archive/891866

= FIX: The query runs slower than you expected when you try to parse a query in SQL Server 2000 =

Article ID: 891866

Article Last Modified on 11/2/2007

-

APPLIES TO


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

-



Bug #: 20000121 (SQL Server 8.0)



''Microsoft distributes Microsoft SQL Server 2000 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2000 fix release.''



SUMMARY
This article describes the following about this hotfix release:
 * The issues that are fixed by this hotfix package
 * The prerequisites for installing the hotfix package
 * Whether you must restart the computer after you install the hotfix package
 * Whether the hotfix package is replaced by any other hotfix package
 * Whether you must make any registry changes
 * The files that are contained in the hotfix package



SYMPTOMS
When you try to parse a query in Microsoft SQL Server 2000, you notice that the query runs slower than you expected. This problem may occur when the following conditions are true:
 * Your query is based on a view that contains many aggregate functions.
 * You have a filter condition on your query that is based on an IN list that has many values.



Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next SQL Server 2000 service pack that contains this hotfix.

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

http://support.microsoft.com/contactus/?ws=support

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.

Prerequisites
To apply this hotfix, you must have the following prerequisites installed on the computer:  Microsoft SQL Server 2000 Service Pack 3 (SP3)

For information about how to obtain SQL Server 2000 SP3, 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

 Microsoft SQL Server 2000 hotfix build 8.00.1007

Restart information
You must restart the computer after you apply this hotfix.

Registry information
You do not have to make changes to the registry.

Hotfix file information
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain all the files that you must have to fully update a product to the latest build.

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.

SQL Server 2000 32-bit versions
  Date         Time   Version         Size       File name ---  05-Mar-2005  01:03  2000.80.1013.0    664,128  Autoplt.dll 05-Mar-2005 01:03  2000.80.1013.0     78,400  Console.exe 05-Mar-2005 01:03  2000.80.1013.0    332,352  Ctasksui.dll 05-Mar-2005 01:03  2000.80.1013.0    315,968  Custtask.dll 05-Mar-2005 01:03  2000.80.1013.0     33,340  Dbmslpcn.dll 05-Mar-2005 01:03  2000.80.1013.0  1,905,216  Dtspkg.dll 05-Mar-2005 01:03  2000.80.1013.0    528,960  Dtspump.dll 05-Mar-2005 01:03  2000.80.1013.0     41,536  Dtsrun.exe 05-Mar-2005 01:03  2000.80.1013.0  1,557,052  Dtsui.dll 05-Mar-2005 01:03  2000.80.1013.0    639,552  Dtswiz.dll 05-Mar-2005 01:03  2000.80.1013.0    352,828  Isqlw.exe 05-Mar-2005 01:03  2000.80.1013.0     82,492  Itwiz.exe 05-Mar-2005 01:03  2000.80.1013.0     90,692  Msgprox.dll 31-Dec-2004 19:16  8.11.41022.0      226,304  Mssdi98.dll 05-Mar-2005 01:03  2000.80.1013.0     62,024  Odsole70.dll 05-Mar-2005 01:03  2000.80.1013.0     25,144  Opends60.dll 05-Mar-2005 00:06                     17,576  Opends60.lib 05-Mar-2005 01:03  2000.80.1013.0     57,904  Osql.exe 05-Mar-2005 01:03  2000.80.1013.0    279,104  Pfutil80.dll 05-Mar-2005 01:03  2000.80.1013.0    143,940  Qrdrsvc.exe 05-Mar-2005 01:03  2000.80.1013.0    221,768  Replprov.dll 05-Mar-2005 01:03  2000.80.1013.0    307,784  Replrec.dll 05-Mar-2005 01:03  2000.80.1013.0    287,304  Rinitcom.dll 05-Mar-2005 01:03  2000.80.1013.0     78,416  Sdiclnt.dll 05-Mar-2005 01:03  2000.80.1013.0     66,112  Semmap.dll 05-Mar-2005 01:03  2000.80.1013.0     57,916  Semnt.dll 05-Mar-2005 01:03  2000.80.1013.0    492,096  Semobj.dll 05-Mar-2005 01:03  2000.80.1013.0     53,832  Snapshot.exe 05-Mar-2005 01:02  2000.80.1013.0     28,672  Sqlagent.dll 05-Mar-2005 01:03  2000.80.1013.0    311,872  Sqlagent.exe 05-Mar-2005 01:02  2000.80.1013.0    168,001  Sqlakw32.dll 04-Mar-2005 23:30                      4,352  Sqlakw32.lib 05-Mar-2005 01:03  2000.80.1013.0     33,344  Sqlctr80.dll 05-Mar-2005 01:03  2000.80.1013.0    815,676  Sqldata.dll 05-Mar-2005 01:03  2000.80.1013.0  4,215,360  Sqldmo.dll 05-Mar-2005 01:03                     25,172  Sqldumper.exe 05-Mar-2005 01:03  2000.80.1013.0    156,224  Sqlmaint.exe 05-Mar-2005 01:03  2000.80.1013.0    180,792  Sqlmap70.dll 05-Mar-2005 01:03  2000.80.1013.0    188,992  Sqlmmc.dll 05-Mar-2005 01:03  2000.80.1013.0    401,984  Sqlqry.dll 05-Mar-2005 01:03  2000.80.1013.0     57,920  Sqlrepss.dll 05-Mar-2005 01:03  2000.80.1013.0  7,721,041  Sqlservr.exe 05-Mar-2005 01:03  2000.80.1013.0    590,396  Sqlsort.dll 05-Mar-2005 01:03  2000.80.1013.0     45,644  Sqlvdi.dll 05-Mar-2005 01:03  2000.80.1013.0    106,588  Sqsrvres.dll 05-Mar-2005 01:03  2000.80.1013.0     33,340  Ssmsgnet.dll 05-Mar-2005 01:03  2000.80.1013.0     33,340  Ssmslpcn.dll 05-Mar-2005 01:03  2000.80.1013.0     33,340  Ssmsqlgc.dll 05-Mar-2005 01:03  2000.80.1013.0     33,340  Ssmssnet.dll 05-Mar-2005 01:03  2000.80.1013.0     82,492  Ssnetlib.dll 05-Mar-2005 01:03  2000.80.1013.0     25,148  Ssnmpn70.dll 05-Mar-2005 01:03  2000.80.1013.0    123,456  Stardds.dll 05-Mar-2005 01:03  2000.80.1013.0    158,240  Svrnetcn.dll 05-Mar-2005 01:03  2000.80.1013.0     76,416  Svrnetcn.exe 05-Mar-2005 01:03  2000.80.1013.0     49,228  Ums.dll 05-Mar-2005 01:03  2000.80.1013.0     74,304  Xplog70.dll 05-Mar-2005 01:03  2000.80.1013.0     98,872  Xpweb70.dll 31-Dec-2004 19:15  8.0.21213.0       352,256  Msvcr71.dll 31-Dec-2004 19:15  2000.80.796.0      57,904  Osql.exe 31-Dec-2004 19:15  2000.80.534.0     127,548  Sqdedev.dll 31-Dec-2004 19:15  2000.80.194.0     180,290  Sqlunirl.dll 04-Mar-2005 23:23  2000.80.1013.0    159,813  Replres.rll 04-Mar-2005 23:52  2000.80.1013.0    172,032  Semobj.rll 04-Mar-2005 23:13  2000.80.1013.0     28,672  Sqlevn70.rll 04-Mar-2005 23:41  2000.80.1013.0    479,232  Sqlmmc.rll

SQL Server 2000 64-bit version
  Date         Time   Version         Size        File name      Platform 05-Mar-2005 09:20  2000.80.1013.0      56,832  Dbmslpcn.dll   IA-64 05-Mar-2005 09:19  2000.80.1013.0     528,960  Dtspump.dll 05-Mar-2005 09:20  2000.80.1013.0     185,856  Msgprox.dll    IA-64 31-Dec-2004 19:10  8.11.41022.0       742,912  Mssdi98.dll 05-Mar-2005 09:20  2000.80.1013.0     151,040  Odsole70.dll   IA-64 05-Mar-2005 09:21  2000.80.1013.0      27,136  Opends60.dll   IA-64 05-Mar-2005 01:44                      19,880  Opends60.lib 05-Mar-2005 09:20  2000.80.1013.0     148,992  Osql.exe       IA-64 05-Mar-2005 09:20  2000.80.1013.0     353,280  Qrdrsvc.exe 05-Mar-2005 09:20  2000.80.1013.0     534,528  Replprov.dll 05-Mar-2005 09:20  2000.80.1013.0     769,024  Replrec.dll 05-Mar-2005 09:20  2000.80.1013.0     650,240  Rinitcom.dll   IA-64 05-Mar-2005 09:20  2000.80.1013.0     160,768  Semmap.dll 05-Mar-2005 09:20  2000.80.1013.0     132,608  Semnt.dll 05-Mar-2005 09:20  2000.80.1013.0      88,576  Snapshot.exe   IA-64 05-Mar-2005 09:19  2000.80.1013.0      10,240  Sqlagent.dll   IA-64 05-Mar-2005 09:20  2000.80.1013.0   1,055,232  Sqlagent.exe   IA-64 05-Mar-2005 09:20  2000.80.1013.0      90,112  Sqlboot.dll    IA-64 05-Mar-2005 09:20  2000.80.1013.0      32,256  Sqlctr80.dll   IA-64 05-Mar-2005 09:20  2000.80.1013.0     812,032  Sqldata.dll    IA-64 05-Mar-2005 09:20  2000.80.1013.0  13,845,504  Sqldmo.dll 05-Mar-2005 09:20                      39,936  Sqldumper.exe 05-Mar-2005 09:20  2000.80.1013.0     493,568  Sqlmaint.exe   IA-64 05-Mar-2005 09:20  2000.80.1013.0      23,040  Sqlmap70.dll   IA-64 05-Mar-2005 09:20  2000.80.1013.0     152,064  Sqlrepss.dll 05-Mar-2005 09:21  2000.80.1013.0  25,264,128  Sqlservr.exe 05-Mar-2005 09:20  2000.80.1013.0     616,960  Sqlsort.dll 05-Mar-2005 09:20  2000.80.1013.0     120,320  Sqlvdi.dll 05-Mar-2005 09:20  2000.80.1013.0     227,328  Sqsrvres.dll 05-Mar-2005 09:20  2000.80.1013.0      53,760  Ssmslpcn.dll 05-Mar-2005 09:20  2000.80.1013.0      59,904  Ssmsqlgc.dll 05-Mar-2005 09:20  2000.80.1013.0     256,000  Ssnetlib.dll 05-Mar-2005 09:20  2000.80.1013.0      20,992  Ssnmpn70.dll 05-Mar-2005 09:20  2000.80.1013.0     430,080  Svrnetcn.dll 05-Mar-2005 09:20  2000.80.1013.0     185,856  Svrnetcn.exe 05-Mar-2005 09:20  2000.80.1013.0     183,296  Xplog70.dll 05-Mar-2005 09:20  2000.80.1013.0     187,392  Xpweb70.dll     IA-64 31-Dec-2004 19:10  2000.80.962.0       57,904  Osql.exe 31-Dec-2004 19:10  2000.80.760.0      269,824  Sqdedev.dll 05-Mar-2005 02:19  2000.80.1013.0     146,432  Replres.rll 05-Mar-2005 01:45  2000.80.1013.0      19,968  Sqlevn70.rll

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, use one or more of the following methods:
 * Perform your query against the base table instead of against the view.
 * Reduce the number of values in the IN list.
 * Reduce the number of aggregate functions.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
After you install this hotfix, you can use trace flag 221 to change the SQL Server behavior. To enable trace flag 221 so that it is turned on whenever SQL Server starts, add the trace flag as a SQL Server startup parameter. To do this, follow these steps:
 * 1) In SQL Server Enterprise Manager, right-click  , and then click Properties.

Note  is a placeholder for the name of the server that is running SQL Server.
 * 1) On the General tab, click Startup Parameters.
 * 2) In the Parameter text box, type -T221, click Add, and then click OK.
 * 3) In the SQL Server Properties (Configure) -   dialog box, click OK.
 * 4) Restart the SQL Server service for the new parameter to take effect.

Alternatively, run the following query in SQL Query Analyzer to dynamically turn on the trace flag. DBCC TRACEON (221, -1) However, if you do not add trace flag 221 as a SQL Server startup parameter, the effect of the DBCC TRACEON command is lost when the SQL Server service restarts.

A more efficient way to deal with large IN lists is to insert the IN list values into a temporary table. Then, remove the IN list from the query, and join the temporary table to the table.

For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:

822499 New naming schema for Microsoft SQL Server software update packages

For more information about the terminology that Microsoft uses when it corrects software after it is released, 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 kbhotfixserver KB891866

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.