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DB2 - Problembeschreibung

Problem IT01955 Status: Geschlossen

DB2 FEDERATION: UNION OF SELECT ON NICKNAMES WITH FETCH FIRST N ROW CLAUSE
COULD RETURN INCORRECT RESULTS

Produkt:
DB2 FOR LUW / DB2FORLUW / 970 - DB2
Problembeschreibung:
In a federated scenario with 2 DB2 LUW databases a UNION of 
SELECT on nicknames with fetch first n row clause could return 
incorrect results. 
 
The problem could be hit when following conditions are met: 
 
1) There is a UNION in the query 
2) The UNION has two or more SELECT branches which queries data 
from nicknames of one same server. 
3) One of the SELECT has Fetch First N Rows Only clause 
 
The fetch first n rows clause could be missing during query 
processing resulting in incorrect result. E.g. 
 
(SELECT * from nickname1 order by c1 fetch first 10 rows only) 
UNION (SELECT * from nickname2 order by c1 fetch first 10 rows 
only) 
 
With this problem, the result of the query could be larger than 
20 records.
Problem-Zusammenfassung:
**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 Version 9.7 Fix Pack 10.                      * 
****************************************************************
Local-Fix:
Lösung
First fixed in DB2 Version 9.7 Fix Pack 10.
Workaround
keiner bekannt / siehe Local-Fix
Weitere Daten
Datum - Problem gemeldet    :
Datum - Problem geschlossen :
Datum - der letzten Änderung:
22.05.2014
17.11.2014
17.11.2014
Problem behoben ab folgender Versionen (IBM BugInfos)
9.7.FP10
Problem behoben lt. FixList in der Version
9.7.0.10 FixList