How to load data in a cell from database depending upon two other cell

[dassoubarna]

I have two MySQL table.
The first table has four column Date, Product, EX, Quantity. EX have three options RB,RC,RT
In the second table there are five columns - Date, Product, RB,RC,RT
RB, RC and RT are the SUM(MySQL) of the Quantity of a particular Product and Date getting from the first table.

For example if first table is follows:

Date	Product	EX	Quantity
02.02.16	P-1	RB	100
02.02.16	P-1	RB	50
02.02.16	P-1	RC	200

Then the second table will be like:

Date	Product	RB	RC	RT
02.02.16	P-1	150	200	0

So I want to run MySQL query and load the result instantly in the RB,RC and RT columns of the second table depending on the value enter in the Date and Product columns of the second table. How could I do that?  Please Help!