DB2 FOR LUW / DB2FORLUW / A50 - DB2

Queries containing multiple outer join operation may produce 
incorrect results under certain conditions. 
 
An OUTER JOIN used in a view, common table expression or nested 
sub-select and contains expressions that do not reference the 
input operands of the OUTER JOIN or complex scalar expressions 
such as 
- CASE expressions 
- COALESCE 
- DECODE 
- VALUE 
- or external user defined functions which are not defined as 
'RETURNS NULL ON NULL INPUT'. 
 
When such an view, common table expression, or nested sub-select 
is used as the NULL producing operand of a higher level OUTER 
JOIN then the query may produce incorrect results.

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* USERS AFFECTED:                                              * 
* ALL                                                          * 
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* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
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* RECOMMENDATION:                                              * 
* Upgrade to DB2 10.5 FP8                                      * 
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The following registry can be used to avoid the potential wrong 
result: 
db2set -im DB2COMPOPT=NO_OJLINEAR

not known / see Local fix

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

17.05.2016
10.01.2017
22.03.2017