Hi all,

I have a Vendor table which links to an Order table via VendorID. I have a Customer table that also links to the Order table via CustomerID.

This means the order table provides a list of all orders, and the IDs of the Customers who made the orders, and the Vendors who handled the orders. For a given order, I can find the state that the customer is from (using Customer table's State field).

This means I can get where the Vendor's sell too. I need to use a sql query to produce a list of vendor's that have NEVER sold to a customer New York. How do I do this? I just cannot get my head around it.

Thanks.