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IT16792: INCORRECT QUERY RESULTS WHEN USING OFFSET-CLAUSE AND/OR FETCH-FIRST-CLAUSE

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APAR status

  • Closed as program error.

Error description

  • A query that specifies a fetch-first-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 11.1 fix pack 1                       *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 version 11.1 fix pack 1
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT16792

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-08-26

  • Closed date

    2017-05-05

  • Last modified date

    2017-05-05

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

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

    IT16918

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
29 June 2020