DB2 - Problembeschreibung
Problem IC96299 | Status: Geschlossen |
MQT OR STATISTICAL VIEW MAY BE NOT MATCHED OR IMPROPERLY MATCHED | |
Produkt: | |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 | |
Problembeschreibung: | |
When an MQT or statistical view is present, query compiler decides whether the incoming query can be routed to MQT and whether uses MQT or statistical view stats to adjust estimated cardinality of query plan. If query has an equality predicate colX = colY, where colX and colY are integer type but with different length, e.g. colX is smallint and columY is bigint, and if MQT or statview has predicate colY = colX where the operand order is swapped, compiler would either not match MQT or statview or not apply cardinality adjustment properly. | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * MQT OR STATISTICAL VIEW MAY BE NOT MATCHED OR IMPROPERLY * * MATCHED * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 V10 fixpack FP4. * **************************************************************** | |
Local-Fix: | |
Change MQT or statistical view definition to have its predicate used the same operand order as the query. | |
verfügbare FixPacks: | |
DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows | |
Lösung | |
First Fixed in DB2 V10 FP4. | |
Workaround | |
Change MQT or statistical view definition to have its predicate used the same operand order as the query. | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 26.09.2013 10.06.2014 10.06.2014 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
Problem behoben lt. FixList in der Version | |
10.1.0.4 |