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when summarizing an order detail file on PRODCODE, how get both a summary
of ORDQTY and a count of distinct order numbers?
the end result I want is this:
PRODCODE Number orders Order qty
-------- ------------- ---------
Y98392 5 252
T89523 7 8183
I tried to do a count of a sub select where I select distinct ORDNUM on the
PRODCODE being grouped, but DB2 did not allow:
select a.prodcode, sum(a.ordqty) totqty,
count( select distinct c.ordnum
from ordDetail c
where c.prodcode = a.prodcode ) numOrders
from ordDetail a
group by a.prodcode
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