IBM Support

IT20872: QUERIES CONTAINING OUTER JOIN OPERATIONS AND AN OLAP FUNCTION NESTED WITHIN ONE OF THE INPUT OPERANDS MAY PERFORM POORLY UNDER C

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as duplicate of another APAR.

Error description

  • Queries containing OUTER JOIN operations and an OLAP function
    nested within one of the input operands may perform poorly under
    certain conditions.
    
    - The sub-select feeding the OLAP function shall contain either
    literal values in the select list or equality predicates between
    a column and a literal.
    - The ON clause of the OUTER JOIN shall reference the derived
    column produced by the literal value or the column in the
    equality predicate.
    
    UPDATE/DELETE/INSERT statements involving triggers or causing
    the update to a materialized query table may also be susceptible
    to this issue.
    

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

  • This APAR is a duplicate of IT27763
    

APAR Information

  • APAR number

    IT20872

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED DUB

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-06-05

  • Closed date

    2022-04-18

  • Last modified date

    2022-04-18

  • APAR is sysrouted FROM one or more of the following:

    IT14166

  • 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

[{"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