I have Table A like this
Country, Product, Sales
==========
US, A, 100
UK, A, 200
US, B, 150
UK,B, 350
In Table A it is like this
Country, Product, Rate
===============
US, A, 0.9
UK, *, 0.7
I want to join these 2 tables if both Country and Product are same as those in Table B, so that Rate...