DB2 FOR LUW / DB2FORLUW / 970 - DB2

A query may return wrong results under certain condition. The 
characteristics of the affected query are: 
a) it will contain a FETCH FIRST n ROWS clause 
b) the sub-select or full-select containing the FETCH FIRST n 
ROWS clause from (a) will contain a nested sub-select or EXISTS 
predicate or IN subquery predicate. 
c) The nested sub-select from (b) will contain an 
outer-reference to another input to the sub-select or 
full-select from (a) 
 
After gathering the db2exfmt output for potential queries that 
may be impacted, it will typically contain a SORT operator that 
reduces the stream cardinality to the value specified in the 
FETCH FIRST n ROW clause and a NLJOIN operator without 
predicates above the SORT, one of whose inputs is the sub-select 
containing the outer-reference.

**************************************************************** 
* USERS AFFECTED:                                              * 
* All Platforms                                                * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 LUW Version 9.7 Fixpack 9                     * 
****************************************************************

Rewrite the query to eliminate the outer-reference in the 
sub-select.

DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
 

The APAR will be fixed in DB2 LUW Version 9.7 Fixpack 9

not known / see Local fix

forerunner  : APAR is sysrouted TO one or more of the following: IC97915 IC97916 
follow-up : 

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

08.10.2013
17.12.2013
17.12.2013

9.7.FP9