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DB2 - Problem description

Problem IC62188 Status: Closed

INCORRECT RESULTS MAY BE RETURNED IF SUPER-AGGREGATION IS USED WITH
NON-NULLABLE COLUMNS AND COALESCE OR VALUE FUNCTION

product:
DB2 FOR LUW / DB2FORLUW / 950 - DB2
Problem description:
Incorrect results may be returned if COALESCE or VALUE scalar 
function is applied to the output of a super-aggregate (SAGG) 
result set. 
 
For this to occur, the following conditions must be satisfied: 
- The SAGG must provide at least 2 groupings 
- The SAGG must aggregate non-nullable columns used in 
expressions (NNC) 
- The first parameter to COALESCE or VALUE must be one of these 
NNCs 
- The COALESCE or VALUE function is used in the SELECT list
Problem Summary:
**************************************************************** 
* USERS AFFECTED:                                              * 
* EE or EEE                                                    * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description.                                       * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.5 Fix Pack 5.                       * 
****************************************************************
Local Fix:
available fix packs:
DB2 Version 9.5 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows

Solution
Problem was first fixed in DB2 Version 9.5 Fix Pack 5.
Workaround
not known / see Local fix
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC62189 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
23.07.2009
19.02.2010
19.02.2010
Problem solved at the following versions (IBM BugInfos)
9.5.FP5
Problem solved according to the fixlist(s) of the following version(s)
9.5.0.5 FixList
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