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DB2 - Problem description

Problem IC65255 Status: Closed

QUERY CONTAINING LEFT/RIGHT OUTER JOIN (LOJ), UNION ALL AND ANSI INNER JOIN
OVER DISTINCT SUBSELECT WITH LOJ MAY ABEND INSTANCE

product:
DB2 FOR LUW / DB2FORLUW / 910 - DB2
Problem description:
DB2 instance may abend if a query with the following 
characteristics is issued: 
- Contains a subselect which consumes the output of a union all 
(UA) and an ansi inner join (IJ) 
- The subselect joins the UA and IJ with a left or right outer 
join (LOJ) where the UA is a null-producer for the LOJ 
- The IJ consumes a distinct subselect (DISTSEL) 
- DISTSEL contains a left or right outer join (LOJ')
Problem Summary:
DB2 instance may abend if a query with the following 
characteristics is issued: 
- Contains a subselect which consumes the output of a union all 
(UA) and an ansi inner join (IJ) 
- The subselect joins the UA and IJ with a left or right outer 
join (LOJ) where the UA is a null-producer for the LOJ 
- The IJ consumes a distinct subselect (DISTSEL) 
- DISTSEL contains a left or right outer join (LOJ')
Local Fix:
Rewrite the query in question to a semantically equivalent form 
that precludes the conditions described
available fix packs:
DB2 Version 9.1 Fix Pack 9  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 10  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 11  for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12  for Linux, UNIX and Windows

Solution
First fixed in DB2 UDB Version 9.1, FixPak 9
Workaround
Rewrite the query in question to a semantically equivalent form 
that precludes the conditions described
BUG-Tracking
forerunner  : APAR is sysrouted TO one or more of the following: IC65403 
follow-up : 
Timestamps
Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :
23.12.2009
14.04.2010
14.04.2010
Problem solved at the following versions (IBM BugInfos)
9.0.,
9.1.
Problem solved according to the fixlist(s) of the following version(s)
9.1.0.9 FixList
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