|
Problem IC81009
|
Status: Closed |
ROLLUP OR CUBE QUERY MAY RETURN INCORRECT RESULT WHEN IT REFERENCES SAME GROUPING(EXPRESSION) MULTIPLE TIMES |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
A query may return incorrect when all the following conditions
are met:
1. Query has GROUP BY with CUBE or ROLLUP operation
2. Query has GROUPING function present in SELECT or HAVING
clause that is applied to CUBE or ROLLUP operation
3. The same GROUPING function is repeated >=2 times
4. GROUPING function operand is such an expression that contains
function of literals |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* A query may return incorrect when all the following *
* conditions are met: *
* 1. Query has GROUP BY with CUBE or ROLLUP operation *
* 2. Query has GROUPING function present in SELECT or HAVING *
* clause that is applied to CUBE or ROLLUP operation *
* 3. The same GROUPING function is repeated >=2 times *
* 4. GROUPING function operand is such an expression that *
* contains function of literals *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 UDB version 9.7 fixpack 6. *
**************************************************************** |
| Local Fix: |
Rewrite the query as follows.
Use CTE (Common Table Expression) to compute one
GROUPING(EXPRESSION) result at first, and SELECT from CTE and
reference the grouping result as wanted. |
| available fix packs: |
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 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
Problem was first fixed in DB2 UDB Version 9.7 FixPack 6. |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC81168 IC81169 IC84309
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 24.01.2012
11.06.2012
11.06.2012 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP6
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.6
|
 |
