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Problem IC96350
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Status: Closed |
MQT OR STATISTICAL VIEW MAY BE NOT MATCHED OR IMPROPERLY MATCHED |
| product: |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 |
| Problem description: |
When an MQT or statistical view is present, query compiler
decides whether the incoming query can be routed to MQT and
whether uses MQT or statistical view stats to adjust estimated
cardinality of query plan. If query has an equality predicate
colX = colY, where colX and colY are integer type but with
different length, e.g. colX is smallint and columY is bigint,
and if MQT or statview has predicate colY = colX where the
operand order is swapped, compiler would either not match MQT or
statview or not apply cardinality adjustment properly. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Problem Description above. *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 V10.5 FP3. *
**************************************************************** |
| Local Fix: |
Change MQT or statistical view definition to have its predicate
used the same operand order as the query. |
| available fix packs: |
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
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| Solution |
First fixed in DB2 version V10.5 FP3. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 26.09.2013
16.09.2014
16.09.2014 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 10.5.0.4
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