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 | |
| 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 |  | 
| 10.5.0.3 |  | 







 
