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DB2 - Problem description

Problem IC77524 Status: Closed

INCORRECT RESULTS MAY BE RETURNED ON DPF WHEN QUERY CONTAINS NODENUMBER
SCALAR ON EACH JOINED TABLE.

product:
DB2 FOR LUW / DB2FORLUW / 980 - DB2
Problem description:
Incorrect results may be returned on DPF when the query 
uses outer join and contains NODENUMBER scalar in each joined 
table. 
 
EX: 
 
 
SELECT ... 
FROM    A  LEFT JOIN B 
ON   A.<column> = B.<column> 
WHERE NODENUMBER(A.<column>) = <#> 
AND NODENUMBER(B.<column>) = <#>
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* INCORRECT RESULTS MAY BE RETURNED ON DPF WHEN QUERY          * 
* CONTAINS NODENUMBER SCALAR ON EACH JOINED TABLE.             * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Run the query using NODENUMBER scalar only on the first      * 
* table of                                                     * 
* the outer join.                                              * 
*                                                              * 
*                                                              * 
*                                                              * 
* SELECT ...                                                   * 
*                                                              * 
* FROM    A  LEFT JOIN B                                       * 
*                                                              * 
* ON  A.<column> = B.<column>                                  * 
*                                                              * 
* WHERE NODENUMBER(A.<column>) = <#>                           * 
****************************************************************
Local Fix:
Run the query using NODENUMBER scalar only on the first table of 
the outer join. 
 
SELECT ... 
FROM    A  LEFT JOIN B 
ON   A.<column> = B.<column> 
WHERE NODENUMBER(A.<column>) = <#>
available fix packs:
DB2 Version 9.8 Fix Pack 4 for AIX and Linux
DB2 Version 9.8 Fix Pack 5 for AIX and Linux

Solution
Fixed in DB2 V98FP4
Workaround
not known / see Local fix
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
15.07.2011
05.08.2011
05.08.2011
Problem solved at the following versions (IBM BugInfos)
9.8.FP4
Problem solved according to the fixlist(s) of the following version(s)
9.8.0.4 FixList