DB2 - Problem description
Problem IT35926 | Status: Closed |
WRONG RESULT WITH MULTIDIMENSIONAL CLUSTERING (MDC) TABLE AND ZIGZAG JOIN (ZZJN) | |
product: | |
DB2 FOR LUW / DB2FORLUW / B50 - DB2 | |
Problem description: | |
Db2 query may generate wrong result (loose rows) when - inner table for ZZJN is Multidimensional Clustering (MDC) table - row compression enable for MDC table. - block index predicate (i.e predicate on columns used in the dimension clause) - along with data-sargable predicate | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * All * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * First fixed in Db2 11.5 Mod 6 Fixpack 0 * **************************************************************** | |
Local Fix: | |
Turn off ZZJN by issuing db2set -im DB2_REDUCED_OPTIMIZATION="ZZJN OFF" | |
Solution | |
Workaround | |
**************************************************************** * USERS AFFECTED: * * All * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * First fixed in Db2 11.5 Mod 6 Fixpack 0 * **************************************************************** | |
Comment | |
First fixed in Db2 11.5 Mod 6 Fixpack 0 | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 16.02.2021 21.06.2021 23.06.2021 |
Problem solved at the following versions (IBM BugInfos) | |
Problem solved according to the fixlist(s) of the following version(s) |