SQL group totals

["Craig Jacobsen" <CraigJacobsen@xxxxxxxxxxx>]

SQL gurus,

I need to get 2 group totals.
I have a table that contains Co#, Cust#, PO#, Order#, Pick#.
There could be multiple Order#s and multiple Pick#s.
(One PO# could generate more than one internal Order# and each Order# could
generate more than one pick#.

The warehouse manager would like to see a report by detail (no problem):
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

And a report summary:
Co#	Cust#	PO#  #Orders	#Picks
100	101	a1	2		5

I could write an RPG program and use level breaks which would be very easy
for me.  I am worried about maintaining the program when I'm not around and
not everyone here understands the RPG cycle.

How would I do this with SQL?

TIA,

Craig