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IT32992: WRONG RESULT, WHEN OPTIMIZATION LEVEL IS LESS THAN 5 AND NULL EQUALS NULL PREDICATE

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Db2 query may generate wrong result when optimization level is
    less than 5 and there is a null
    equals null predicate of form c1 = c2 OR c1 is null AND c2 is
    null
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Rowstore                                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.5.5.0 or higher                            *
    ****************************************************************
    

Problem conclusion

  • Upgrade to Db2 11.5.5.0 or higher
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT32992

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-05-27

  • Closed date

    2020-11-20

  • Last modified date

    2020-11-20

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

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

    IT33004

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB50 PSY

       UP

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.5"}]

Document Information

Modified date:
16 September 2021