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Problem IC88352
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Status: Closed |
INCORRECT VALUE IN EXPLAIN_PREDICATE.SUBQUERY WHEN EXPLAINING FROM A SECTION |
| product: |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 |
| Problem description: |
When capturing section explain information, the value of column
SUBQUERY of the explain table EXPLAIN_PREDICATE may incorrectly
be 'N' for some predicates. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* LUW users with Subquery predicates *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade the server to DB2 for Linux, Unix and Windows to *
* Version 10.1 Fixpack 2. *
**************************************************************** |
| Local Fix: |
A workaround is to select the following expression instead of
selecting the SUBQUERY column directly.
SELECT CASE LENGTH(TRIM(WHEN_EVALUATED)) WHEN 0 THEN 'N' ELSE
'Y' END AS SUBQUERY FROM EXPLAIN_PREDICATE |
| available fix packs: |
DB2 Version 10.1 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows
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| Solution |
DB2 for Linux, Unix and Windows Version 10.1 Fixpack will
properly display the Subquery indicator as "Y" or "N" in the
EXPLAIN_PREDICATE table, in the SUBQUERY column, when and
explain from section is used to gather an explain containing
subqueries. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 17.11.2012
17.12.2012
17.12.2012 |
| Problem solved at the following versions (IBM BugInfos) |
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| Problem solved according to the fixlist(s) of the following version(s) |
| 10.1.0.2
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 |
| 10.5.0.2
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