Fixes are available
DB2 Version 9.7 Fix Pack 5 for Linux, UNIX, and Windows
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
APAR status
Closed as program error.
Error description
Using a JOIN between a VALUES clause and a table or sub-select might result in suboptimal query plans. If the VALUES clause contains multiple columns, the optimizer might not choose the best join method for satisfying the JOIN if the VALUES clause joins to multiple tables with a common local equality predicate as in the following example: SELECT ... FROM table(values(?,?),(?,?),(?,?),(?,?)) as a(a1, a2), b, c, d WHERE a.a1=b.b1 and a.a2=b.b2 and a.a1=c.c1 and a.a2=c.c2 and a.a1=d.d1 and a.a2=d.d2 and a.a3 = ? and b.b3=a.a3 and c.c3=a.a3
Local fix
Use an IN predicate instead of a JOIN to a VALUES clause
Problem summary
**************************************************************** * USERS AFFECTED: * * All DB2 users * **************************************************************** * PROBLEM DESCRIPTION: * * Using a JOIN between a VALUES clause and a table or * * sub-select might result in suboptimal query plans. * **************************************************************** * RECOMMENDATION: * * Upgrade to DB2 9.7 Fix pack 5 or later * ****************************************************************
Problem conclusion
Upgrade to a Fix Pack containing the Fix
Temporary fix
Comments
APAR Information
APAR number
IC73249
Reported component name
DB2 FOR LUW
Reported component ID
DB2FORLUW
Reported release
970
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-12-13
Closed date
2011-12-19
Last modified date
2011-12-19
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
R970 PSN
UP
[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"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":"9.7"}]
Document Information
Modified date:
17 September 2021