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I keep a collection of sample code. Sorry if I don't have time to change
the names to meet your example.
Here is 1 way:
update salesordh as h
set shipdate = shipdate + 7 days
where exists
(select *
from customers as c
where type = 'B'
and c.companyno = h.companyno
and c.customerno = h.customerno)
Here is a better way:
update salesordh
set shipdate = shipdate + 7 days
where (companyno, customerno) in
(select companyno, customerno
from customers
where type = 'B')
I saw these examples in this article:
http://www.itjungle.com/fhg/fhg041410-story02.html
Yours truly,
Glenn Gundermann
Email: glenn.gundermann@xxxxxxxxx
Work: (416) 675-9200 ext. 89224
Cell: (416) 317-3144
On 30 March 2016 at 17:57, Stone, Joel <Joel.Stone@xxxxxxxxxx> wrote:
When fileB has more than one key?
The following works when fileB has only one key. How can I do the same
when fileB has two+ keys?
update fileA a
set a.field1 =
(select b.field2 from fileB b
where a.keyfield1 = b.keyfield1
where a.keyfield1 = (select keyfield1 from fileB b where a.keyfield1 =
b.keyfield1)
Is there a simpler method - maybe using JOIN ON?
(I cant use MERGE as it must function on v5r4 for a few more months)
Thanks!
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