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JR24773: LIKE PREDICATE MAY PRODUCE INCORRECT RESULTS

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • The LIKE predicate may produce incorrect results. The following
    conditions must be met for the problem to occur:
    .
    1) The LIKE pattern expression must contain at least three
    percent signs (%).
    .
    2) The underscore character (_) must be contained in one of the
    secondary subpatterns that end with the percent sign.
    .
    Examples:
    =========
    %subpattern1%subpattern2%
    -- if subpattern2 has "_" -> possibility of problems
    .
    %subpattern1%subpattern2%subpattern3%
    -- if subpattern2 or subpattern3 have "_" -> possibility of
       problems
    .
    Steps to reproduce:
    ===================
    * create table LIKETEST (datafield varchar(20));
    * insert into LIKETEST (datafield) values ('mod-500188');
    * insert into LIKETEST (datafield) values ('mod-500188');
    * select datafield from LIKETEST where datafield like
      '%mod%01_8%';
    .
    The actual output:
    .
    0 record(s) selected.
    .
    The expected output would be:
    .
    mod-500188
    mod-500188
    .
    2 record(s) selected.
    

Local fix

  • Rewrite the LIKE pattern expression if possible.
    

Problem summary

  • Users affected: see APAR text
    Problem description: see APAR text
    Problem summary: see APAR text
    

Problem conclusion

  • First fixed in DB2 UDB Version 8.1, FixPak 14
    

Temporary fix

  • see APAR text
    

Comments

APAR Information

  • APAR number

    JR24773

  • Reported component name

    DB2 UDB PE WIND

  • Reported component ID

    5724B5501

  • Reported release

    810

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2006-09-08

  • Closed date

    2006-12-01

  • Last modified date

    2006-12-01

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

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

Modules/Macros

  • ENGN_SQV
    

Fix information

  • Fixed component name

    DB2 UDB PE WIND

  • Fixed component ID

    5724B5501

Applicable component levels

  • R810 PSN

       UP

  • R820 PSN

       UP

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Document Information

Modified date:
06 October 2021