I have two tables Quantity and Purchases. When I purchase a product, first I have to check either it's old product or new. If it's Old means I have purchased before and its details already saved in the Database in Quantity Table so it will update the AvailableQuantity field only in the Quantity Table. Else if it's a new Product it must add new row in the Quantity Table with all details of the product.
I hope it's clear for all
I need your comment. How to do it with Trigger ( IF Exist Update else Insert ) or give me another solution.
asked Oct 21 '09 at 11:02 AM in Default
Something like this. Use a procedure instead of a trigger
answered Oct 22 '09 at 03:57 AM