|
Problem IC65343
|
Status: Geschlossen |
WRONG RESULTS MAY OCCUR IF THE QUERY CONTAINS EXISTENTIAL SUBQUE RIES AND A CORRELATED UNION ALL CONSUMED IN THE SAME SUBSELECT |
| Produkt: |
DB2 FOR LUW / DB2FORLUW / 950 - DB2 |
| Problembeschreibung: |
Wrong results have been noted on all version of DB2 if the
following conditions are true:
1. There are two or more existential subqueries present in the
query.
2. There is a UNION ALL with the following characterstics:
a. One arm of the UNION ALL has less number of tables as
compared to other arm(s)
b. The UNION ALL is correlated to the subqueries.
3. The existential subqueries are consumed in the same subselect
that consumes the Union All |
| Problem-Zusammenfassung: |
****************************************************************
* USERS AFFECTED: *
* All users using subqueries and union all views in *
* theirqueries *
****************************************************************
* PROBLEM DESCRIPTION: *
* Wrong results have been noted on all version of DB2 if *
* thefollowing conditions are true:1. There are two or more *
* existential subqueries presentinthe query.2. There is a *
* UNION ALL with the following characterstics:a. One arm of *
* the UNION ALL has less number of tables ascompared to other *
* arm(s)b. The UNION ALL is correlated to the subqueries.3. *
* The existential subqueries are consumed in the samesubselect *
* that consumes the Union All *
****************************************************************
* RECOMMENDATION: *
* Update to Version 9.5 Fix Pack 6 *
**************************************************************** |
| Local-Fix: |
Change the value of CURRENT QUERY OPTIMIZATION special register
to 0
SET CURRENT QUERY OPTIMIZATION 0; |
| verfügbare FixPacks: |
DB2 Version 9.5 Fix Pack 6a for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.5 Fix Pack 10 for Linux, UNIX, and Windows
|
| Lösung |
Problem was first fixed in Version 9.5 Fix Pack 6 |
| Workaround |
keiner bekannt / siehe Local-Fix |
| Weitere Daten |
Datum - Problem gemeldet :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
| 29.12.2009
25.05.2010
25.05.2010 |
| Problem behoben ab folgender Versionen (IBM BugInfos) |
9.5.FP6
|
| Problem behoben lt. FixList in der Version |
