How to write a query to display SUM of the quantity if same product having same price in my inventory?

Question

My table looks like

Product       Price        Qty
A              100          10
B              200          30
A              100          15
A              150          20

Two times Price 100 is repeating for product A in my table. It should add the quantity if price value same for the product. My result should be like as follows

Product       Price         Qty
A              100           25
A              150           20
B              200           30

Answer 1

Just use group by product, price with sum aggregation as:

select product, price, sum(qty)
  from tab
group by product, price
order by product, price;

Answer 2

use sum() function with group by product and price

    select t.product, t.price,sum(t.qty) as Qty from your_table t
    group by t.product,t.price