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DB2 - Problem description

Problem IC65912 Status: Closed

INCORRECT RESULTS DUE TO WRONG TQ OPERATION PRODUCED BY
NODONUMBER/DBPARTITIONNUM SCALAR FUNCTION.

product:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problem description:
A query with nodenumber/dbpartitionnum scalar function might 
return incorrect results. The query may fail to collect rows 
from 
specified database partition(s) if all the following conditions 
are met: 
 
1.  The query involves a UNION (could also be via view with 
union or full outer join which the compiler will generate a 
union for) 
2.  At least one branch below the UNION applies a NODENUMBER or 
DBPARTITIONNUM function 
3.  There is a DTQ below the UNION (in db2exfmt output), and the 
details of the DTQ in the db2exfmt output shows the following: 
 
  Output Streams: 
  -------------- 
... 
      Partitioning:         (FUNC ) 
         NODENUMBER() or PARTITION() directed to Single 
Partition 
... 
         Partition Column Names: 
         ---------------------- 
         +NONE
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* Users who use nodenumber/dbpartitionnum scalar function      * 
* inDPF environment.                                           * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* A query with nodenumber/dbpartitionnum scalar function       * 
* mightreturn incorrect results. The query may fail to collect * 
* rowsfromspecified database partition(s) if all the           * 
* followingconditionsare met:                                  * 
*                                                              * 
* 1. The query involves a UNION (could also be via view        * 
* withunion or full outer join which the compiler will         * 
* generate aunion for)                                         * 
* 2. At least one branch below the UNION applies a             * 
* NODENUMBERorDBPARTITIONNUM function                          * 
* 3. There is a DTQ below the UNION (in db2exfmt output),      * 
* andthedetails of the DTQ in the db2exfmt output shows the    * 
* following:                                                   * 
* Output Streams:                                              * 
* --------------                                               * 
* ...                                                          * 
* Partitioning:        (FUNC )                                 * 
* NODENUMBER() or PARTITION() directed to SinglePartition      * 
* ...                                                          * 
* Partition Column Names:                                      * 
* ----------------------                                       * 
* +NONE                                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Please upgrade to DB2 V9.7 fixpack 2 or later.               * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows

Solution
Problem was first fixed in Version 9.7 Fix Pack 2 (s100514).
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
28.01.2010
06.07.2010
06.07.2010
Problem solved at the following versions (IBM BugInfos)
9.7.FP2
Problem solved according to the fixlist(s) of the following version(s)
9.7.0.2 FixList