DB2 FOR LUW / DB2FORLUW / B10 - DB2

Wrong results might be observed when a scalar sub-query is on 
the left hand side of a NOT IN predicate. 
This can happen using db2 version 10.5 and later when: 
 
   1. a query statement contains a NOT IN predicate; 
   2. the left hand side of the NOT IN predicate is a scalar 
sub-query; 
   3. the evaluation of the NOT IN predicate returns an empty 
result set 
 
   The following use case can reproduce this problem: 
   create table t(c1 int); 
   insert into t values 1; 
   create table ssq(c2 int not null); 
   insert into ssq values 2; 
   create table sq(c3 int not null); 
   insert into sq values 2; 
   select c1 from t where (select c2 from ssq) not in (select c3 
from sq); 
   C1 
   ----------- 
             1 
 
     1 record(s) selected.

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

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       :

18.05.2017
27.06.2017
27.06.2017