RE: Update "orphan" entries with SQL

You should put trans as your primary file, and then do an outer join, giving
you just the records you need.

Paul Nelson
Office 512-392-2577
Cell 708-670-6978
nelsonp@xxxxxxxxxxxxx


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Tom Hightower
Sent: Wednesday, February 15, 2012 3:52 PM
To: Midrange Systems Technical Discussion
Subject: Update "orphan" entries with SQL

I have a master file with the following keyfields:
mcono, mcust, mtickn, mdate

And a transaction file:
tcono, tcust, ttickn, ttdate, tprod, tunits, tsts

The transaction file matches to the master file:
mcono=tcono, mcust=tcust, mtickn=ttickn, mdate=ttdate

What I need to do is to update the tsts field to "O" if there is no matching
master entry for the transaction record. Here's what I have for the
selection:

select * from trans where not exists (select * from master where mcono=tcono
and mcust=tcust and mtickn=ttickn and mdate=tdate)

How do I adjust that so that I update the tsts field?

Thanks!

TomH