DB2 - Problem description
| Problem IT05326 | Status: Closed |
DB2 MIGHT PRODUCE INCORRECT RESULT WHEN REFERENCING EMPTY TABLE WITH AGGREGATE FUNCTIONS IN SUBSELECT | |
| product: | |
DB2 FOR LUW / DB2FORLUW / A10 - DB2 | |
| Problem description: | |
Under rare scenarios, DB2 might produce incorrect results if the following conditions are true: 1) The query references the SYSIBM.SYSDUMMY1 table or a VALUES clause. 2) The sub-select referencing table from 1) contains an aggregation function. 3) The sub-select also has some predicate, which will lead to an empty result set. 4) The topmost select does not reference any column from the aforementioned sub-select. Example: select 1 from (SELECT AVG(1) FROM SYSIBM.SYSDUMMY1 where 1=0); 1 ----------- 0 record(s) selected. The correct result is a single row with null value. | |
| Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * UNKNOWN * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 version 101 fix pack 5 * **************************************************************** | |
| Local Fix: | |
| Solution | |
The problem was first fixed in DB2 version 101 fix pack 5 | |
| Workaround | |
not known / see Local fix | |
| Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 03.11.2014 12.08.2015 12.08.2015 |
| Problem solved at the following versions (IBM BugInfos) | |
| Problem solved according to the fixlist(s) of the following version(s) | |
| 10.1.0.5 |
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