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IT34940: WRONG RESULT WHEN EQUALITY PREDICATE HAS IS NOT NULL WITH FALSE ON OTHER SIDE.

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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 the following
    conditions are met:
    
    -At least one Outer Join
    
    -One equality predicate with IS NOT NULL on one side and FALSE
    on the other side.
    

Local fix

  • Convert the predicate into IS NULL form.
    
    For example convert
                    ISNOTNULL(col) = FALSE
    
                    into
    
                    col IS NULL
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT34940

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-11-16

  • Closed date

    2021-04-06

  • Last modified date

    2021-04-06

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

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

    IT35494

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:
31 August 2021