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DB2 - Problembeschreibung

Problem IC71959 Status: Geschlossen

DATE PREDICATES INCORRECTLY OPTIMIZED IN QUERY REWRITE.

Produkt:
DB2 FOR LUW / DB2FORLUW / 910 - DB2
Problembeschreibung:
During query rewrite a date predicate is rewritten incorrectly. 
The Date arithmetic is not properly applied and the resulting 
optimized statement is not syntactically equivalent to the 
original query. 
 
For an example: 
 
Original Statement: 
------------------ 
select f02date 
from datetbl 
where (f02date + 2 month) = '2004-02-29' 
 
 
Optimized Statement: 
------------------- 
SELECT Q1.F02DATE AS "F02DATE" 
FROM MYSCHEMA.DATETBL AS Q1 
WHERE (Q1.F02DATE = '12/29/2003') 
 
As a result the return set will not contain rows that match the 
predicate.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* All                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* Date predicates are rewritten incorrectly.                   * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Apply FP10                                                   * 
****************************************************************
Local-Fix:
Rewriting the query by placing all constant terms on one side of 
the predicate might avoid the problem.
verfügbare FixPacks:
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

Lösung
First fixed in FP10
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
15.10.2010
16.06.2011
16.06.2011
Problem behoben ab folgender Versionen (IBM BugInfos)
Problem behoben lt. FixList in der Version
9.1.0.10 FixList