title: IOS Firebase query access by value
body: <p>how can i get given json object by value using query. In details, want to get <a href="https://i.stack.imgur.com/2W020.png" rel="nofollow noreferrer">1</a> for id:4 without looping all events in the json table</p>
  
  <p><a href="https://i.stack.imgur.com/2W020.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2W020.png" alt="enter image description here"></a></p>