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 |