FIX: SQL Server 2000 Service Pack 1 (SP1) and later builds may not generate an execution plan for a query, and you receive error message 8623

This article has been archived. It is offered "as is" and will no longer be updated.
Bug #: 471415 (SQL Server 8.0)
Microsoft SQL Server 2000 fixes are distributed 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.
SYMPTOMS
When all the following conditions are true, SQL Server 2000 Service Pack 1 (SP1) and later builds may not generate an execution plan for a query:
  • The query contains a UNION statement to concatenate the results of two queries.
  • One of the queries has hard-coded return values in the select list that are typed to match the select list of the other query by using the Convert function or the Cast function.
You receive the following error message:
Server: Msg 8623, Level 16, State 1, Line 1
Internal Query Processor Error: The query processor could not produce a query plan. Contact your primary support provider for more information.
RESOLUTION

Service pack information

To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For more 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.

Note A 64-bit version of this hotfix is also available.

IA-64

   Date         Time   Version            Size    File name   -------------------------------------------------------------------------   28-Apr-2004  01:30  2000.80.936.0      56,832  Dbmslpcn.dll        10-Oct-2003  18:48                      1,581  Inst_repl_hotfix.sql   28-Apr-2004  01:30  2000.80.936.0     185,856  Msgprox.dll         28-Apr-2004  01:30  2000.80.936.0     150,528  Odsole70.dll        28-Apr-2004  01:30  2000.80.936.0     148,992  Osql.exe            27-Apr-2004  18:31                  1,104,848  Replmerg.sql   28-Apr-2004  01:30  2000.80.936.0     534,016  Replprov.dll        28-Apr-2004  01:30  2000.80.936.0     769,024  Replrec.dll         28-Apr-2004  01:30  2000.80.936.0     160,768  Semmap.dll          28-Apr-2004  01:30  2000.80.936.0      32,256  Sqlctr80.dll        28-Apr-2004  01:30  2000.80.936.0  13,845,504  Sqldmo.dll          28-Apr-2004  01:30                     39,936  Sqldumper.exe       28-Apr-2004  01:30  2000.80.936.0      23,040  Sqlmap70.dll        28-Apr-2004  01:30  2000.80.936.0     152,064  Sqlrepss.dll        28-Apr-2004  01:30  2000.80.936.0  24,961,024  Sqlservr.exe        28-Apr-2004  01:30                 20,941,824  Sqlservr.pdb   28-Apr-2004  01:30  2000.80.936.0     120,320  Sqlvdi.dll          28-Apr-2004  01:30  2000.80.936.0      53,760  Ssmslpcn.dll        28-Apr-2004  01:30  2000.80.936.0     254,976  Ssnetlib.dll        28-Apr-2004  01:30  2000.80.936.0      20,992  Ssnmpn70.dll        28-Apr-2004  01:30  2000.80.936.0     430,080  Svrnetcn.dll        28-Apr-2004  01:30  2000.80.936.0     185,856  Svrnetcn.exe        28-Apr-2004  01:30  2000.80.936.0     187,392  Xpweb70.dll      

x86

   Date         Time   Version            Size    File name   ----------------------------------------------------------------------   27-Apr-2004  18:03  2000.80.936.0     664,128  Autoplt.dll         27-Apr-2004  18:03  2000.80.936.0      78,400  Console.exe         27-Apr-2004  18:03  2000.80.936.0     315,968  Custtask.dll        27-Apr-2004  18:03  2000.80.936.0      33,340  Dbmslpcn.dll        08-Apr-2004  21:42                    786,432  Distmdl.ldf   08-Apr-2004  21:42                  2,359,296  Distmdl.mdf   10-Oct-2003  18:48                        180  Drop_repl_hotfix.sql   27-Apr-2004  18:03  2000.80.936.0   1,905,216  Dtspkg.dll          27-Apr-2004  18:03  2000.80.936.0     528,960  Dtspump.dll         27-Apr-2004  18:03  2000.80.936.0   1,557,052  Dtsui.dll           27-Apr-2004  18:03  2000.80.936.0     639,552  Dtswiz.dll          10-Oct-2003  18:48                    747,927  Instdist.sql   10-Oct-2003  18:48                      1,581  Inst_repl_hotfix.sql   27-Apr-2004  18:03  2000.80.936.0      82,492  Itwiz.exe           27-Apr-2004  18:03  2000.80.936.0      90,692  Msgprox.dll         27-Apr-2004  18:03  2000.80.936.0      62,024  Odsole70.dll        27-Apr-2004  18:04  2000.80.936.0      25,144  Opends60.dll        27-Apr-2004  18:04                     82,944  Opends60.pdb   27-Apr-2004  18:03  2000.80.936.0      57,904  Osql.exe            27-Apr-2004  18:03  2000.80.936.0     279,104  Pfutil80.dll        10-Oct-2003  18:37                    550,780  Procsyst.sql   08-Apr-2004  21:42                     12,305  Qfe469315.sql   08-Apr-2004  21:42                     19,195  Qfe469571.sql   27-Apr-2004  16:54                  1,104,848  Replmerg.sql   27-Apr-2004  18:03  2000.80.936.0     221,768  Replprov.dll        27-Apr-2004  18:03  2000.80.936.0     307,784  Replrec.dll         27-Apr-2004  17:02  2000.80.936.0     159,813  Replres.rll   10-Oct-2003  18:48                  1,087,150  Replsys.sql   10-Oct-2003  18:48                    986,603  Repltran.sql   27-Apr-2004  18:03  2000.80.936.0     287,304  Rinitcom.dll        27-Apr-2004  18:03  2000.80.936.0      66,112  Semmap.dll          27-Apr-2004  18:03  2000.80.936.0      57,916  Semnt.dll           27-Apr-2004  18:03  2000.80.936.0     492,096  Semobj.dll          27-Apr-2004  17:30  2000.80.936.0     172,032  Semobj.rll   27-Apr-2004  18:03  2000.80.936.0      53,832  Snapshot.exe        12-Mar-2004  03:10                    117,834  Sp3_serv_uni.sql   27-Apr-2004  18:02  2000.80.936.0      28,672  Sqlagent.dll        27-Apr-2004  18:03  2000.80.936.0     311,872  Sqlagent.exe        27-Apr-2004  18:02  2000.80.936.0     168,001  Sqlakw32.dll        27-Apr-2004  18:03  2000.80.936.0      33,344  Sqlctr80.dll        27-Apr-2004  18:03  2000.80.936.0   4,215,360  Sqldmo.dll          27-Apr-2004  18:03                     25,172  Sqldumper.exe       27-Apr-2004  16:52  2000.80.936.0      28,672  Sqlevn70.rll   27-Apr-2004  18:03  2000.80.936.0     180,792  Sqlmap70.dll        27-Apr-2004  18:03  2000.80.936.0     188,992  Sqlmmc.dll          27-Apr-2004  17:31  2000.80.936.0     479,232  Sqlmmc.rll   27-Apr-2004  18:03  2000.80.936.0     401,984  Sqlqry.dll          27-Apr-2004  18:03  2000.80.936.0      57,920  Sqlrepss.dll        27-Apr-2004  18:04  2000.80.936.0   7,581,777  Sqlservr.exe        27-Apr-2004  18:04                 13,050,880  Sqlservr.pdb   27-Apr-2004  18:03  2000.80.936.0     590,396  Sqlsort.dll         27-Apr-2004  18:03  2000.80.936.0      45,644  Sqlvdi.dll          27-Apr-2004  18:03  2000.80.936.0     106,588  Sqsrvres.dll        27-Apr-2004  18:03  2000.80.936.0      33,340  Ssmslpcn.dll        27-Apr-2004  18:03  2000.80.936.0      82,492  Ssnetlib.dll        27-Apr-2004  18:03  2000.80.936.0      25,148  Ssnmpn70.dll        27-Apr-2004  18:03  2000.80.936.0     123,456  Stardds.dll         27-Apr-2004  18:03  2000.80.936.0     158,240  Svrnetcn.dll        27-Apr-2004  18:03  2000.80.936.0      76,416  Svrnetcn.exe        27-Apr-2004  18:04  2000.80.936.0      49,228  Ums.dll             27-Apr-2004  18:04                    132,096  Ums.pdb   27-Apr-2004  18:03  2000.80.936.0      98,872  Xpweb70.dll      
Note Because of file dependencies, the most recent hotfix or feature that contains these files may also contain additional files.

SQL Server startup parameter

Note After you apply this hotfix, you must also add trace flag 9054. To do this, follow these steps:
  1. In SQL Server Enterprise Manager, right-click your SQL Server name, and then click Properties.
  2. In the SQL Server Properties (Configure) - SQL Server Name dialog box, click the General tab.
  3. On the General tab, click Startup Parameters.
  4. In the Startup Parameters - SQL Server Name dialog box, type "-T9054" (without the quotation marks) in the Parameter text box.
  5. Click Add, and then click OK.
  6. In the Startup Parameters - SQL Server Name dialog box, click OK.
  7. Restart the SQL Server service for the new startup parameter to take effect.
WORKAROUND
To work around this problem for an individual query, use either of the following methods:
  • Use a UNION ALL statement instead of a UNION statement.
  • Set the data type of the constant values by using something other than the Convert function or the Cast function because the other query sets the data type.
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 about software updates, 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
Properties

Article ID: 838409 - Last Review: 01/17/2015 07:26:23 - Revision: 3.3

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