Your select statement is so very close to the answer...
Update trans a set tsts = 'O'
where not exists (select * from master where mcono=tcono and mcust=tcust and
mtickn=ttickn and mdate=tdate)
Note: My sql statements usually take 2 tries before the typos are fixed, so
I cannot guarantee the above statement will work as is.
-----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
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