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