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Problem IC65403
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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 / 970 - 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 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
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| Solution |
First fixed in DB2 v9.7 fixpak 2 |
| Workaround |
Rewrite the query in question to a semantically equivalent form
that precludes the conditions described |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 07.01.2010
13.05.2010
13.05.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.
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| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.2
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