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IT13001: VALUE FUNCTION WITH HASH JOIN MIGHT RETURN WRONG RESULT SET

A fix is available

DB2 Version 10.1 Fix Pack 6 for Linux, UNIX, and Windows

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APAR status

  • Closed as program error.

Error description

  • When HASH JOIN is excuted in a SQL with the VALUE function like
as follows,
there might be wrong recursive row returns.

VALUE ( RTRIM( CASE WHEN A.COL1 = 0 AND B.COL2 = '40' THEN
SUBSTR(B.COL3, 1, 7) ELSE SUBSTR(B.COL3, 8, 7) END), '') AS COL4

The issue is fixed in 10.5 with APAR IT13002.

Local fix

  • db2set DB2_TCG_DEFAULT_OPTIONS="set disable_pushdown on"

Problem summary

  • ****************************************************************
* USERS AFFECTED:                                              *
* ALL                                                          *
****************************************************************
* PROBLEM DESCRIPTION:                                         *
* See Error Description                                        *
****************************************************************
* RECOMMENDATION:                                              *
* Upgrade to DB2 10.1 Fix Pack 6                               *
****************************************************************

Problem conclusion

  • First fixed in DB2 10.1 Fix Pack 6

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    IT13001
    • 

  • Reported component name
    DB2 FOR LUW
    • 

  • Reported component ID
    DB2FORLUW
    • 

  • Reported release
    A10
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    YesHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2016-01-04
    • 

  • Closed date
    2017-03-02
    • 

  • Last modified date
    2017-03-02
    • 





    

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

    • 

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

    • 



Fix information


    

  • Fixed component name
    DB2 FOR LUW
    • 

  • Fixed component ID
    DB2FORLUW
    • 



Applicable component levels


    

  • RA10  PSN  UP
       FIX
    • 








      
              
                            

              

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Document Information


            

            


                        

            Modified date:
            

            02 March 2017
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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