DB2 - Problem description
Problem IT17679 | Status: Closed |
WRONG RESULTS AGAINST COLUMN ORGANIZED TABLE ARE POSSIBLE WITH EXPANDING JOIN PLAN | |
product: | |
DB2 FOR LUW / DB2FORLUW / A50 - DB2 | |
Problem description: | |
WRONG RESULTS AGAINST COLUMN ORGANIZED TABLE ARE POSSIBLE WITH EXPANDING JOIN PLAN, if - Join is between 3 or more column organized tables, using equality predicates - top most join in the plan is happening on a variable string value and we do find and strip trailing blanks as part of normalization processing in preparation for join Example: 3) HSJOIN: (Hash Join) Cumulative Total Cost: 58882.1 Cumulative CPU Cost: 8.86042e+08 Cumulative I/O Cost: 11664 Cumulative Re-Total Cost: 58882.1 Cumulative Re-CPU Cost: 8.86042e+08 Cumulative Re-I/O Cost: 11664 Cumulative First Row Cost: 58882.1 Estimated Bufferpool Buffers: 181 Arguments: --------- EARLYOUT: (Early Out flag) NONE SEMIJOIN: (Semi-join flag) FALSE Predicates: ---------- 5) Predicate used in Join, Comparison Operator: Equal (=) Subquery Input Required: No Filter Factor: 7.87278e-05 Predicate Text: -------------- (VARCHAR(Q2.COLUMN1, 12) = Q3.COLUMN2) | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * ALL * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to Db2 10.5 Fix Pack 9 or higher * **************************************************************** | |
Local Fix: | |
Please, install this fix | |
Solution | |
First fixed in Db2 10.5 Fix Pack 9 | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 26.10.2016 29.09.2017 12.10.2017 |
Problem solved at the following versions (IBM BugInfos) | |
9.0. | |
Problem solved according to the fixlist(s) of the following version(s) |