DB2 FOR LUW / DB2FORLUW / B10 - DB2

When comparing fixed character or graphic strings where either 
side uses a CASE statement, DB2 may return incorrect results in 
VARCHAR2 compatibility mode. 
 
Example: 
 
CREATE TABLE T(C1 CHAR(4)) 
INSERT INTO T VALUES ('M') 
SELECT * FROM T WHERE C1 = CASE WHEN 1=1 THEN 'M' END 
 
Incorrect Result: 
 
C1 
---- 
 
  0 record(s) selected.

**************************************************************** 
* USERS AFFECTED:                                              * 
* ALL                                                          * 
**************************************************************** 
* PROBLEM DESCRIPTION:                                         * 
* See Error Description                                        * 
**************************************************************** 
* RECOMMENDATION:                                              * 
* Upgrade to DB2 11.1 Mod 2 Fix Pack 2 or higher               * 
****************************************************************

From the example above, cast the CASE statement to a fixed 
character string of the desired length: 
 
SELECT * FROM T WHERE C1 = CAST((CASE WHEN 1=1 THEN 'M' END) AS 
CHAR(1)) 
 
C1 
-------- 
M 
 
  1 record(s) selected.

DB2 Version 11.1 Mod 2 Fix Pack 2 for Linux, UNIX, and Windows
 Db2 Version 11.1 Mod2 Fix Pack2 iFix001 for Linux, UNIX, and Windows
 Db2 Version 11.1 Mod2 Fix Pack2 iFix002 for Linux, UNIX, and Windows
 Db2 Version 11.1 Mod 3 Fix Pack 3 for Linux, UNIX, and Windows
 Db2 Version 11.1 Mod3 Fix Pack3 iFix001 for Linux, UNIX, and Windows
 Db2 Version 11.1 Mod3 Fix Pack3 iFix002 for Linux, UNIX, and Windows
 

First fixed in DB2 11.1 Mod 2 Fix Pack 2

not known / see Local fix

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

13.12.2016
23.06.2017
23.06.2017