|
Problem IC95267
|
Status: Closed |
QUERY CONTAINING EXISTS SUBQUERY AND FETCH FIRST N ROWS CLAUSE MIGHT PRODUCE INCORRECT RESULTS |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
Under certain scenario, DB2 might produce incorrect results if
the following conditions are true:
1. The query contains an exists subquery
2. The subquery has a fetch first n rows clause in the outer
most subselect
3. There is either a LOB column or a total column column width >
32K in the query output list.
Eg.:
select P.lob
from P
where exists (select 1 from SQ where SQ.c1 = P.c1 fetch first 1
rows only); |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2version 10.5 Fix Pack 3. *
**************************************************************** |
| Local Fix: |
1. Remove fetch first n rows clause
2. Add order by clause to the subquery. |
| available fix packs: |
DB2 Version 10.5 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Cancun Release 10.5.0.4 (also known as Fix Pack 4) for Linux, UNIX, and Windows
DB2 Version 10.5 Fix Pack 9 for Linux, UNIX, and Windows
|
| Solution |
First fixed in DB2 version 10.5 Fix Pack 3. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 27.08.2013
27.02.2014
27.02.2014 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.3
|
 |
| 10.5.0.3
|
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