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How to update a field with calculated result from different table?

I have a simple database with Table Inventory and Order.
In Table Order, I have fields SKU#......QtySo ld
Where Inventory-SKU# related to Order-SKU# (One SKU# to many Order)
Now I want to calculate the percentage of QtySold>5 to Total number of
And I want to put the result into a field in Inventory.
Anyone can help?

Mar 18 '06 #1
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