Re: ##EMailNumber 01-WNY-3332161 SQL How To ...

Why join the files?  Might not the following work?
UPDATE FILE1
        SET STATUS=X
        WHERE CUSNO IN (SELECT CUSNO FROM FILE2 WHERE .....)





jmoreno@militarycars.com on 04/15/99 04:44:26 PM
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Subject:        ##EMailNumber 01-WNY-3332161 SQL How To ...

Hello all.

  I have a simple SQL question to the SQL/400 and Query Management/400 GURUS

  I have two different files FILE 1 and FILE 2 that I am joining by common 
fields.
 Say customer number: CUSNO and  STATUS in FILE 1 equal to "M".

  Once the JOINED file is created,  I can use an RPG  pgm to READ the JOINED 
file
 and issue UPDATES  against  FILE 1 .....Change STATUS  code to "X".

   FILE 1                                  FILE  2
 ----------                               --------------
  CUSNO                              CUSNO
  STATUS

I do not care who is the primary or secondary file in this question ...


Part 1:
 For simplicity there are no duplicate CUSNO in FILE 1 and/or FILE 2.
 How do I execute this using SQL in a SINGLE or MULTIPLE  statement (s)   ?

Part 2:
How do I the same in case of Duplicates in FILE 1 and NO Duplicates in FILE 2 ?

Part 3:
How do I do the same in case of Duplicates in FILE 1 and FILE 2 ?

I just wanted to ask .. before it is too late .... <bg>

All answers are appreciated

Regards

                                                                                
                                     Jorge


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