A fix is available
APAR status
Closed as program error.
Error description
If a query: - contains a common subexpression ("CSE") over column-organized tables - SELECTs the same column from different references to that CSE - orders the output on one copy of that column using ORDER BY and the structure of the query is such that same column from the different CSE references can have different values by the time the data streams from those references join together, the output might be ordered on the wrong copy of the column - the one from the other CSE reference - rather than the specified one. Example: CREATE TABLE "FOJ "."TABLE6" ( "CD_DEMO_SK" INTEGER NOT NULL ) DISTRIBUTE BY HASH("CD_DEMO_SK") IN "USERSPACE1" ORGANIZE BY COLUMN; ALTER TABLE "FOJ "."TABLE6" ADD PRIMARY KEY ("CD_DEMO_SK") NOT ENFORCED; CREATE TABLE "FOJ "."TABLE10" ( "C_CUSTOMER_SK" INTEGER NOT NULL , "C_BIRTH_DAY" INTEGER , "C_BIRTH_MONTH" INTEGER , "C_BIRTH_YEAR" INTEGER ) DISTRIBUTE BY HASH("C_CUSTOMER_SK") IN "USERSPACE1" ORGANIZE BY COLUMN; ALTER TABLE "FOJ "."TABLE10" ADD PRIMARY KEY ("C_CUSTOMER_SK") NOT ENFORCED; insert into "FOJ "."TABLE6" values 1,2,3,4; insert into "FOJ "."TABLE10" values (1,1,1,1),(1,2,3,4),(2,3,4,5) ; with v(c1, c2, c3) as (select C_BIRTH_DAY, C_BIRTH_YEAR, count(C_BIRTH_MONTH) from FOJ.TABLE10 group by C_BIRTH_DAY, C_BIRTH_YEAR) select v1.c1 as w, v1.c2+v1.c3 as x, v2.c1, v2.c2+v2.c3 as z from v v2 right join v v1 on v1.c2=v2.c3 order by v2.c1, x W X C1 Z ----------- ----------- ----------- ----------- 1 2 3 6 1 2 2 5 1 2 1 2 2 5 - - 3 6 - - 5 record(s) selected. The rows should be in the order of C1.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Upgrade to db2_v111m4fp7 or later * ****************************************************************
Problem conclusion
Upgrade to db2_v111m4fp7 or later
Temporary fix
Comments
APAR Information
APAR number
IT35689
Reported component name
DB2 FOR LUW
Reported component ID
DB2FORLUW
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2021-01-25
Closed date
2022-04-17
Last modified date
2022-04-20
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
DB2 FOR LUW
Fixed component ID
DB2FORLUW
Applicable component levels
RB10 PSY
UP
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]
Document Information
Modified date:
04 May 2022