DB2 - Problembeschreibung
Problem IC80061 | Status: Geschlossen |
OPTIMIZER INCORRECT RESULTS FOR JOIN WITH REDUNDANT PREDICATES ON DPF | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 | |
Problembeschreibung: | |
Different results for a query on DPF and non-DPF systems The following query returns no rows on non DPF , but incorrectly 2 rows on DPF WITH val (a1) AS (VALUES ('')) ,def (a2,b2) AS (VALUES ('dsf',''), ('tsx','')) ,sel AS ( SELECT val.a1 ,'' AS c FROM val LEFT OUTER JOIN def ON def.a2 = '' ) SELECT def.a2 ,sel.a1 ,sel.c FROM def INNER JOIN sel ON def.a2 = sel.a1 AND def.b2 = '' ; (no tables required ) | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 version 9.7 Fix Pack 6 * **************************************************************** | |
Local-Fix: | |
set optimization level 1 | |
verfügbare FixPacks: | |
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows | |
Lösung | |
This APAR is fixed in DB2 version 9.7 Fix Pack 6. | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 29.11.2011 12.06.2012 12.06.2017 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
9.7.FP6 | |
Problem behoben lt. FixList in der Version | |
9.7.0.6 |