Forcing Specific Distinct Columns....

Hi Guys,

I have a slight problem, a query that i have written produces data with 2 primary keys the same... however, DINSTINCT wont work in this case as the rows are still different...

Is their a way to force 1 column to always be unique?

Heres the query:


SELECT TOP 5 ORDER_ITEM.ItemID AS 'Item ID', ITEM.ItemName AS 'Item Name',
(SELECT SUM(OrdItem2.ItemQuantity) FROM ORDER_ITEM OrdItem2
WHERE OrdItem2.ItemID = ORDER_ITEM.ItemID
) AS Total_Purchased, SUM(ORDER_ITEM.ItemQuantity) AS 'Customer Purchased',
CUSTOMER.customerForename AS 'Customer Forename',
CUSTOMER.customerSurname AS 'Customer Surname'
FROM ITEM, ORDER_ITEM, ORDER_T, CUSTOMER
WHERE ITEM.ItemID = ORDER_ITEM.ItemID
AND ORDER_ITEM.OrderID = ORDER_0510096.OrderID
AND ORDER_T.CustomerID = CUSTOMER.CustomerID
GROUP BY ORDER_ITEM.ItemID, ITEM.ItemName,
CUSTOMER.customerForename, CUSTOMER.customerSurname
ORDER BY Total_Purchased DESC


The query is supposed to select the TOP 5 Products sold as well as selecting the customer that purchased the greatest amount of that item and the amount they purchased.

Currently, i will get 2 duplicate rows (except for customers name and the items the purchased. Like this:

ItemID
83630Mathew Smith
8 366Tony Wattage

Which is kinda annoying.... is there anyway i can prevent this?

And also apart from the Where Joins... is there a more efficient way of writing this?

thx for reading :-)

--Philkills