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IT26322: JOIN OF COLUMN-ORGANIZED TABLES MIGHT RETURN INCORRECT RESULTS

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Wrong result might output from queries containing
    join on columnar tables and implicit column equivalence and join
    predicates with expressions
    
    Wrong results might occur when running a query with the
    following characteristics:
    1) the query joins multiple column organized tables
    2) the join predicates reference expressions
    3) implicit column equivalence can be derived from these join
    predicates
    

Local fix

  • Work-around:
    1) Lower optlevel
    2) force the join order to join tables with join predicate first
    3) rewrite the query to add join predicates to express the
    implicit column equivalence
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Columnar Organized tables                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description. Please, install v11 Fixpak 4.         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * See Error Description. Please, install v11 Fixpak 4 on DB2   *
    * Server                                                       *
    ****************************************************************
    

Problem conclusion

  • See Error Description. Please, install v11 Fixpak 4.
    

Temporary fix

  • See LOCAL FIX
    

Comments

APAR Information

  • APAR number

    IT26322

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-09-18

  • Closed date

    2018-12-23

  • Last modified date

    2018-12-23

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

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

    IT26439

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RA50 PSY

       UP

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Document Information

Modified date:
23 December 2018