|
Problem IC67843
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Status: Closed |
AN OR PREDICATE CONTAINING INLIST SUBTERM MAY BE REWRITTEN TO UNION |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
An OR predicate can be rewritten to UNION such that the OR
subterm predicates can be processed individually at each UNION
leg. To receive this rewrite transformation, the OR subterm
predicate must meet certain criterion to ensure the superiority
of query performance. The case to be handled is OR subterm
predicate is an IN predicate. This IN predicate should have a
form such that (i) the operand column is a leading index key or
a column from the index whose leading columns are bound via
local equality predicate and (ii) IN list elements are composed
of only constants, host variables, special registers, arithmetic
operations, datetime operations, string concat, case expression,
casting functions, and scalar functions. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users using an OR predicate containing INLIST subterm *
****************************************************************
* PROBLEM DESCRIPTION: *
* AN OR PREDICATE CONTAINING INLIST SUBTERM MAY BE REWRITTENTO *
* UNION *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 V9.7 Fixpack 3 *
**************************************************************** |
| Local Fix: |
|
| available fix packs: |
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 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a 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 |
Fixed in DB2 V9.7 Fixpack 3 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC69872
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 13.04.2010
07.10.2010
07.10.2010 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP3
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.3
|
 |
| 9.7.0.3
|
|
