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Problem IT28596
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Status: Closed |
QUERY WITH INDEX SCAN ON A COLUMNAR TABLE WHICH IS UNDER A UNIONMAY GET INCORRECT RESULT
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| product: |
DB2 FOR LUW / DB2FORLUW / B10 - DB2 |
| Problem description: |
If Query has a Plan where UNION has a leg with Index Scan on a
Columnar Table, then it is possible to get incorrect result.
Example problem portion of the Plan:
UNION
|
/-------+-------
TBSCAN FETCH
from /----+-----
Table A IXSCAN CO-TABLE: Table B
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INDEX: Index_Table_B |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* COLUMNAR TABLES WITH INDEXES ONLY *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Please, See Error Description and Install this Fix. *
**************************************************************** |
| Local Fix: |
db2set DB2_REDUCED_OPTIMIZATION="COL_IXSCAN_ALL_V1133 OFF"
-im option can be used, BUT Static sql will need to be reboud
and already compiled dynamic sql re-compiled as well. |
| Solution |
|
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 27.03.2019
29.11.2019
29.11.2019 |
| Problem solved at the following versions (IBM BugInfos) |
|
| Problem solved according to the fixlist(s) of the following version(s) |
