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IT16918: INCORRECT QUERY RESULTS WHEN USING OFFSET-CLAUSE AND/OR FETCH-CLAUSE

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APAR status

  • Closed as program error.

Error description

  • A query that specifies a fetch-clause and/or offset-clause may
    return wrong
    results if there is a predicate in the same subselect.  For
    example:
    
      SELECT ID, NAME
      FROM TABLE1
      WHERE <predicate>
      ORDER BY ID
      OFFSET ? ROWS
      FETCH NEXT ? ROWS ONLY
    
    In some circumstances <predicate> may be applied after the
    offset-clause and fetch-first-clause are processed, which
    results in fewer rows than expected.
    

Local fix

  • Move the predicate into a nested subselect, e.g.:
    
      SELECT ID, NAME
      FROM (SELECT ID, NAME FROM TABLE1 WHERE <predicate>)
      ORDER BY ID
      OFFSET ? ROWS
      FETCH NEXT ? ROWS ONLY
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 version 10.5 fix pack 9                       *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 version 10.5 fix pack 9
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT16918

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    A50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-09-06

  • Closed date

    2017-09-27

  • Last modified date

    2018-10-01

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

    IT16792

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

    IT17385 IT17386

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSEPGG","label":"DB2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.5","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
01 October 2018