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  3. June 2008

Re: SQL group totals

Add a row with a NULL value for ORDER# to see the difference. See the nuances of COUNT here, for row versus value count and the NULL value.
http://publib.boulder.ibm.com/infocenter/iseries/v5r4/topic/db2/rbafzmstcolfunc.htm

Regards, Chuck

rob@xxxxxxxxx wrote:
I do not think your "count" implementation works. COUNT seems to
ignore what's in the parenthesis.

select co, cust, PO#, order#, pick#
from qtemp.craig 1....+....2....+....3....+....4....+....5....+....6....+.
CO CUST PO# ORDER# PICK#
100 101 a1 1 1
100 101 a1 1 2
100 101 a1 1 3
100 101 a1 2 4
100 101 a1 2 5
End of data ********
select co, cust, PO#, count(order#) AS NbrOrders, count(pick#) as
nbrPicks from qtemp.craig group by co, cust, po# 1....+....2....+....3....+....4....+....5....+....6....+..
CO CUST PO# NBRORDERS NBRPICKS 100 101 a1 5 5 End of data ********
Perhaps with some complicated mess involving DISTINCT or some such thing...

Rob Berendt

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