title: How to write a query to display SUM of the quantity if same product having same price in my inventory?
body: <p>My table looks like</p>
  
  <pre><code>Product       Price        Qty
  A              100          10
  B              200          30
  A              100          15
  A              150          20
  </code></pre>
  
  <p>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</p>
  
  <pre><code>Product       Price         Qty
  A              100           25
  A              150           20
  B              200           30
  </code></pre>