RE: beginner's question

I recommend using SETLL instead of CHAIN before a WRITE. It will help
performance and prevent any field values from changing.

Patrick Conner
www.ConnecTown.com
(828) 244-0822



                                                                                
               
                    Rizwan Ahmed                                                
               
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                    owner-rpg400-l@mi        Subject:     RE: beginner's 
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                    12/07/00 04:59 AM                                           
               
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Ange
Also you could check for the existence of the record first by a chain with
the keyfield and if it doesn't exist then you could attempt to write it.


Rizwan





     -----Original Message-----
     From:   Fabrice CALMELAT [SMTP:f.calmelat@itech-international.com]
     Sent:   Thursday, December 07, 2000 1:23 AM
     To:     RPG400-L@midrange.com
     Subject:        RE: beginner's question


     What it means is :


     - Your file Test28 has a key (one or more fields).
     - The UNIQUE keyword is used in the DDS of your file (TEST28).


     TEST28 is a file that can be accessed by a key (CHAIN in RPG) and the
     key
     has to be unique. You get the error message because your program tries
     to
     add a new record in TEST28, but, the record your trying to add has a
     key
     that already exist in TEST28.


     I hope this helps,


     Fabrice Calmelat
     ITech International Ltd - http://www.itech-international.com
     +44 (0) 798 99 77 601





     -----Original Message-----
     From: owner-rpg400-l@midrange.com [mailto:owner-rpg400-l@midrange.com
     ]On
     Behalf Of ange
     Sent: 07 December 2000 08:12
     To: RPG400-L@midrange.com
     Subject: beginner's question





     hi, all
         I want to add records to and update the same file in one of my RPG

     program. I used as follow in my F specs.


      FTEST28    UF A E           K DISK


     and  I used WRITE to add the records and UPDATE to update the records?


         The compile is passed,  but when I run it, I met the message: '
     Attempt to write a duplicate record to file TEST28 (C G D F).'





         What is the problem? Thanks.







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