DB2 FOR LUW / DB2FORLUW / 970 - DB2

Certain queries may return in correct results when they contain 
a NEW TABLE data-change-reference for an INSERT or UPDATE of a 
simple view. The view exposes a GENERATED ALWAYS AS EXPRESSION 
column from the base table and does not have any predicates 
 
In this case the value returned by the query for the GENERATED 
ALWAYS AS EXPRESSION column may be incorrect. The data stored in 
the table for the GENERATED ALWAYS AS EXPRESSION column is 
correct, and can be retrieved via a normal select column. 
 
An example is below 
 
CREATE TABLE T1 (X INT, Y INT, Z INT GENERATED ALWAYS AS (X+Y)); 
CREATE VIEW V1 AS SELECT * FROM T1; 
 
SELECT * FROM NEW TABLE (UPDATE V1 SET X = X+1); 
 
The value returned f from the query for column Z may be 
incorrect.

**************************************************************** 
* USERS AFFECTED:                                              * 
* All users on DB2 v97 FP5 and earlier                         * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 v97 FP6                                       * 
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1) Split the query into two parts, first to INSERT or UPDATE the 
data and a second to get the new values. 
2) Add a simple predicate to the view definition.

DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
 DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
 

First Fixed in DB2 v97 FP6

not known / see Local fix

forerunner  : APAR is sysrouted TO one or more of the following: IC84490 
follow-up : 

Date  - problem reported    :
Date  - problem closed      :
Date  - last modified       :

13.02.2012
21.08.2012
21.08.2012

9.7.FP6