RE: Sql - updating multiple records with a sequential value

["Elvis Budimlic" <ebudimlic@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Oops, small correction on a file name in the correlated subquery:

UPDATE myFile a SET a.suffix = 
  CASE flag WHEN 'Y' THEN '00' 
  ELSE 
    (SELECT b.suffix 
     FROM (SELECT master, contract, 
                  RIGHT(DIGITS(ROW_NUMBER() 
                               OVER(PARTITION BY master 
                                    ORDER BY contract)),2)
                  AS suffix 
           FROM myFile
           WHERE flag = 'N') b 
     WHERE a.master = b.master AND a.contract = b.contract) 
  END

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-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Elvis Budimlic
Sent: Wednesday, April 23, 2008 1:20 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Sql - updating multiple records with a sequential value

Mike, based on further fleshing out of your requirements, I believe this
ought to work:

UPDATE myFile a SET a.suffix = 
  CASE flag WHEN 'Y' THEN '00' 
  ELSE 
    (SELECT b.suffix 
     FROM (SELECT master, contract, 
                  RIGHT(DIGITS(ROW_NUMBER() 
                               OVER(PARTITION BY master 
                                    ORDER BY contract)),2)
                  AS suffix 
           FROM qtemp/t1 
           WHERE flag = 'N') b 
     WHERE a.master = b.master AND a.contract = b.contract) 
  END 

Elvis

Celebrating 11-Years of SQL Performance Excellence on IBM i5/OS and OS/400
www.centerfieldtechnology.com
 

-----Original Message-----
Subject: Sql - updating multiple records with a sequential value

I am adding some new fields to a file.  The file containts a master
contract#, contract# and (new) contract suffix

MASTER            CONTRACT      MASTER Flag		 SUFFIX
		  200300022                   Y		   00
200300022          200500120 		N
200300022          200500121 		N
200300022          200600124 		N

I want to be able to update the suffix with 01, 02, 03, etc for  each
master contract that matches a contract

So if mastflg = 'y', update suffix(incrementing value)  where contract =
master

Can I do this with SQL?    I'm not sure how to make the suffix field
increment. 

Thanks

Mike