Informix - Problembeschreibung
Problem IT28161 | Status: Geschlossen |
HASH JOIN EXECUTION SHOULD BE AVOIDED IF EITHER BUILD OR PROBE SIDE ALREADY KNOWN TO BE EMPTY | |
Produkt: | |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 | |
Problembeschreibung: | |
An expensive (non-outer) hash join, once chosen by the query optimizer, seems to get executed even in cases where a zero-rows outcome already can be predicted by either the build or the probe side having no rows. | |
Problem-Zusammenfassung: | |
**************************************************************** * USERS AFFECTED: * * Users of IDS prior to 12.10.xC13. * **************************************************************** * PROBLEM DESCRIPTION: * * An expensive (non-outer) hash join, once chosen by the query * * optimizer, seems to get executed even in cases where a * * zero-rows outcome already can be predicted by either the * * build or the probe side having no rows. * **************************************************************** * RECOMMENDATION: * **************************************************************** | |
Local-Fix: | |
Lösung | |
Workaround | |
keiner bekannt / siehe Local-Fix | |
Weitere Daten | |
Datum - Problem gemeldet : Datum - Problem geschlossen : Datum - der letzten Änderung: | 19.02.2019 24.09.2019 24.09.2019 |
Problem behoben ab folgender Versionen (IBM BugInfos) | |
12.10.xC13 | |
Problem behoben lt. FixList in der Version |