RE: Update file set field = case when exists?

Elvis,

Yes that worked, thanks. I'll have to try and remember that.

I actually just ended up using two statements when I couldn't get the original to work.

This worked also:

update csteqcp A
set cecsts = coalesce((Select 'A' from sysibm/sysdummy1
where exists(select * from csteqnp b
where a.locnbr = b.locnbr
and a.ctrnbr = b.ctrnbr
and a.cusnbr = b.cusnbr
and a.itmctg = b.itmctg)
),'I')


Just seems like the simple original syntax should have worked :)

Charles Wilt
--
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307

wiltc@xxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-
bounces@xxxxxxxxxxxx] On Behalf Of Elvis Budimlic
Sent: Wednesday, May 28, 2008 2:08 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Update file set field = case when exists?

Would this work (UNTESTED):

update csteqcp A
set cecsts = case
(select min(1)
from csteqnp B
where a.locnbr = b.locnbr and
a.ctrnbr = b.ctrnbr and
a.cusnbr = b.cusnbr and
a.itmctg = b.itmctg)
when 1 then 'A'
else 'I' end

HTH, Elvis

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


-----Original Message-----
Subject: Update file set field = case when exists?

Is the following not supported or am I doing it wrong?

update csteqcp A
set cecsts = case
when exists (select * from csteqnp B
where a.locnbr = b.locnbr
and a.ctrnbr = b.ctrnbr
and a.cusnbr = b.cusnbr
and a.itmctg = b.itmctg)
then 'A'
else 'I'
end

Charles Wilt


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