Informix - Problem description
Problem IT10309 | Status: Closed |
THE UPDATE STATISTICS CAUSES WRONG RESULTS IN THE MULTIPLY-TABLE JOIN OF THE SELECT QUERY WITH MIN() OR MAX() AGGREGATES | |
product: | |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 | |
Problem description: | |
The multiply-table join with select query using min() or max() aggregates returns wrong result after running UPDATE STATISTICS. | |
Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * Users of 12.10.xC1 through 12.10.xC5, as well as users of * * 11.70.xC3 through 11.70.xC8. * **************************************************************** * PROBLEM DESCRIPTION: * * A query may return incorrect results for simple aggregation * * under the following conditions: * * - the same table is referenced at least twice with * * different aliases, e.g., tab1 t1, tab1 t2 * * - the query contains an aggregation on a column from one * * of the instances of the table, e.g. MIN(t1.c1) * * - the query plan chosen by the optimizer accesses the * * other instance of the table, e.g. t2, using a keyonly index * * access, and via nested-loop join * **************************************************************** * RECOMMENDATION: * * Update to IBM Informix Server 12.10.xC6 * **************************************************************** | |
Local Fix: | |
Solution | |
Problem Fixed In IBM Informix Server 12.10.xC6 | |
Workaround | |
not known / see Local fix | |
Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 23.07.2015 30.12.2015 30.12.2015 |
Problem solved at the following versions (IBM BugInfos) | |
12.10.xC6 | |
Problem solved according to the fixlist(s) of the following version(s) | |
12.10.xC6 |