Does anyone feel like being nice and helping me with an sql problem?

Question

i know its not java but ive posted on sql forums and got no where, so i was hoping someone here would know how to do what i want to do
the link to the forum post is
http://forums.mysql.com/read.php?10,49695,49695#msg-49695
the basic thing is
im trying to sort a shopping basket into the most popular products
so if the data was
basketID||orderID||productID||quantity
1||1||2||1
2||1||3||6
3||1||4||1
4||2||2||1
5||2||4||1
6||3||4||1
then im using this statement
SELECT productID,COUNT(*) AS cat_num FROM shopbasket_table GROUP BY productID ORDER BY cat_num DESC LIMIT 0,10
which sorts them like
productID
4
2
3
but this doesnt take in to account the quantity in the basket which it really should
as product 3 has 6 in the basket
so it should be
3
4
2
anyone know enough about sql to know what im missing from my statement?
sorry again for posting on the java forum, u peeps are just super smart though and im sure someone here would know :)

Answer 1

I don't know how to do it in mysql, but it appears to be a "crosstab" kind of problem. This article may help