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LI74777: CARDINALITY OF OR PREDICATE IS UNDERESTIMATED WHEN LIKE PREDICATE IS A SUBTERM OF AN OR PREDICATE.

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APAR status

  • Closed as program error.

Error description

  • Cardinality of OR predicate is underestimated when LIKE
    predicate is a subterm of an OR predicate, for example:
    
    ((Q1.PRODUCT_ID LIKE 'A%') OR (Q1.PRODUCT_ID =  '1234567'))
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * CARDINALITY OF OR PREDICATE IS UNDERESTIMATED WHEN           *
    * LIKEPREDICATE IS A SUBTERM OF AN OR PREDICATE.               *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 UDB Version 9.5, FixPak 6                     *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 UDB Version 9.5, FixPak 6
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI74777

  • Reported component name

    DB2 UDE ESE LIN

  • Reported component ID

    5765F4104

  • Reported release

    950

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-07-29

  • Closed date

    2010-06-14

  • Last modified date

    2010-06-14

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

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

    IC62586 IC66315

Fix information

  • Fixed component name

    DB2 UDE ESE LIN

  • Fixed component ID

    5765F4104

Applicable component levels

  • R950 PSN

       UP

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Document Information

Modified date:
14 June 2010