PTF Cover Letter
PTF ( Program Temporary Fixes ) Cover letter
LIC-DB-OTHER-INCORROUT Left outer join query returns wrong r
Pre/Co-Requisite PTF / Fix List
REQ LICENSED PTF/FIX LEVEL
TYPE PROGRAM RELEASE NUMBER MIN/MAX OPTION
---- -------- --------- ------- ------- ------
PRE 5770999 V7R3M0 MF61285 00/00 0000
CO 5770999 V7R3M0 MF61589 00/00 0000
CO 5770999 V7R3M0 MF61506 00/00 0000
CO 5770999 V7R3M0 MF61333 00/00 0000
CO 5770999 V7R3M0 MF61335 00/00 0000
CO 5770999 V7R3M0 MF61339 00/00 0000
CO 5770999 V7R3M0 MF61156 00/00 0000
CO 5770999 V7R3M0 MF61148 00/00 0000
NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
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APAR Error Description / Circumvention
-----------------------------------------------
Wrong results may be produced for a query involving a LEFT OUTER
JOIN if the join predicate contains a value derived from a
column value. If that same derived value is included in the
query output by the SELECT clause, the value may be incorrect
for some rows. Note that the derivation may be explicit (e.g.
SUBSTR) or implicit (a cast of a numeric value to a character
value).
CORRECTION FOR APAR MA45434 :
-----------------------------
In order to improve the speed of query results, the SQE
optimizer evaluates values only when necessary. Because of the
column value's presence in the join predicate, the optimizer
concluded that the column value had already been evaluated by
the right side of the LEFT OUTER JOIN. However, this assumption
did not hold for the join exception row, leading to an
unspecified value being produced for exception rows. This fix
ensures that the value is unconditionally evaluated after the
join so that the correct value accompanies all rows.
CIRCUMVENTION FOR APAR MA45434 :
--------------------------------
None.
Activation Instructions
None.
Special Instructions
None.
Default Instructions
THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.
Supersedes
PTF/FIX NO(S). APAR TITLE LINE
-------------- ------------------------------------------------------------
MF61633 LIC-DB-OTHER-MSGMCH3203-F/DBOPAFFINITY-T/QQQOOODBOP followed
MF61587 LIC-DB-PERFM bad plan when running commit *ALL
MF61576 OSP-DB-OTHER-SAP400 INDEX ADVISER IS SETTING SORT TABLE TO *
MF61571 OSP-PAR-940XMISC AFTER UPGRADE TO R720 POOR QUERY PERFORMANC
MF61507 LIC-DB-PERFM SQL Improve column elimination in union queries
MF61432 LIC-DB Internal Database Maintenance
MF61332 LIC-DB Internal Maintenance
MF61301 LIC-DB Offload long EKR estimates found during optimization
MF61155 LIC-DB-PERFM - EAO with Partitioned Tables
MF61155 LIC-DB-PERFM Partitioned Table Index preload IO cost too hig
MF61149 LIC-PERFM-PAR-940XMISC Bad Query Plan
MF61126 LIC-DB-OTHER-F/QDBSIGEX-MSGCPF5149 MAY OCCUR WHEN USING USIN
MF60927 LIC-DB Plan Cache Property Number of created MTIs is zero
MF60927 LIC-DB-INCORROUT SMP XML INCORRECT OUTPUT AFTER UPGRADE
MF60927 LIC-DB-OTHER-INCORROUT SQL LOCATE with VARCHAR columns and t
MF60927 LIC-DB-PERFM SQL Honor KEEPINMEM MEMORY_POOL_PREFERENCE for
Summary Information
System.............................. i
Models..............................
Release............................. V7R3M0
Licensed Program.................... 5770999
APAR Fixed.......................... View details for APAR MA45434
Superseded by:...................... View fix details for PTF MF70707
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C6299730
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Modified date:
05 June 2023