Help With Simple Join?

I don't know if it's Friday or what, but I can't for the life of me come up with an easy way to do this:

I have 3 tables I want to join:

Sale Table:
Sale_No Cus_No Sale_Qty
1 Joe01 250

Order Table:
Ord_No Sale_No Order_Qty ShipToCode
1 1 20 DestA
2 1 20 DestA
3 1 20 DestA
4 1 20 DestB
5 1 20 DestB

ShipTo Table:

Cus_No ShipToCode ShipToName
Joe01 DestA Philadelphia
Joe01 DestB Chicago
Bob01 DestA Boston


A sale for say 100 tons would have 5 orders (each for 20 tons) associated with it by Sale_No. Each of those orders can go to a different ShipTo destination. Since only the ShipTo Code is stored in the Orders table, I need to get the ShipToName. However, As demonstrated in the example table above, the key in the ShipTo table is both Cus_No AND ShipToCode.

I want a list of Sales and Orders, which is an inner join on Sale_No, piece of cake. However, I then need to use the ShipTo table to go from the ShipToCode to the ShipToName. Unfortunately, Cus_No is not in the Orders table, it is back in the Sales table (proper normalization is a pain sometimes).

What I came up with is this, but is this correct?:


FROM Sales INNER JOIN
Orders ON Sales.sale_no = Orders.sale_no INNER JOIN
ShipTo ON Orders.ShipToCode = ShipTo.ShipToCode AND
Sales.cus_no = ShipTo.cus_no