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Problem IC97757
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Status: Geschlossen |
QUERY PERFORMANCE ISSUE DUE TO STATISTICS PREVENTING PUSHDOWN OF JOINS |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 |
| Problembeschreibung: |
Query containing UNION ALL join, may perform badly due to
statistics which prevent the push down of joins.
This is a costing issue. The push-down makes progress only when
query rewrite thinks the estimated join cardinality is not more
than the outer LEFT OUTER JOIN. |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* All Users on DB2 V101 FP3 and earlier *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 v101 FP4 *
**************************************************************** |
| Local-Fix: |
|
| verfügbare FixPacks: |
DB2 Version 10.1 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows
|
| Lösung |
First Fixed in db2 v101 FP4 |
| Workaround |
keiner bekannt / siehe Local-Fix |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 19.11.2013
04.06.2014
04.06.2014 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
|
| Problem behoben lt. FixList in der Version |
| 10.1.0.4
|
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