|
Problem IC62586
|
Status: Closed |
CARDINALITY OF OR PREDICATE IS UNDERESTIMATED WHEN LIKE PREDICATE IS A SUBTERM OF AN OR PREDICATE. |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Cardinality of OR predicate is underestimated when LIKE
predicate is a subterm of an OR predicate, for example:
((Q1.PRODUCT_ID LIKE 'A%') OR (Q1.PRODUCT_ID = '1234567')) |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* CARDINALITY OF OR PREDICATE IS UNDERESTIMATED WHEN *
* LIKEPREDICATE IS A SUBTERM OF AN OR PREDICATE. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 UDB Version 9.7, FixPak 2. *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
DB2 Version 9.7 Fix Pack 2 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 3a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 4 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
First fixed in DB2 UDB Version 9.7, FixPak 2. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 18.08.2009
31.05.2010
31.05.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.2
|
 |
