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DB2 - Problembeschreibung

Problem IC96922 Status: Geschlossen

USER-DEFINED FUNCTION WITH INDEX EXTENSION EXPLOITATION MIGHT RETURN
INCORRECT RESULTS IF INDEX IS NOT PRESENT

Produkt:
DB2 FOR LUW / DB2FORLUW / A50 - DB2
Problembeschreibung:
The following is an example of a UDF which might return 
incorrect results: 
CREATE FUNCTION PSearch (a pair, b pair) 
   RETURNS Integer 
   LANGUAGE SQL 
   DETERMINISTIC 
   NO EXTERNAL ACTION 
   PREDICATES 
( 
     WHEN = 1 
       SEARCH BY EXACT INDEX EXTENSION PairExt 
         WHEN KEY (a) USE  RetrieveKey (b) 
         WHEN KEY (b) USE  RetrieveKey (a) 
) 
   RETURN (0) 
 
The following is a query using the UDF as a predicate: 
SELECT * FROM mytable AS a 
WHERE PSearch(a.column, 1) = 1 
 
If the index does not exist, the SEARCH BY expression is not 
processed and the function PSearch returns the value 0 which 
results in no rows being returned.  Due to the error in function 
processing, all table rows might be returned.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Update to 10.5.0.3                                           * 
****************************************************************
Local-Fix:
Ensure that the index exists if the function is intended to be 
used with a table that has a defined index extension.
verfügbare FixPacks:
DB2 Version 10.5 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 9 for Linux, UNIX, and Windows

Lösung
Problem Fixed In 10.5.0.3
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
15.10.2013
28.02.2014
07.04.2015
Problem behoben ab folgender Versionen (IBM BugInfos)
Problem behoben lt. FixList in der Version
10.5.0.3 FixList
10.5.0.3 FixList