title: How to get a query for child inside another child?
body: <p><a href="https://i.stack.imgur.com/tGK5N.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tGK5N.png" alt="enter image description here"></a></p>
  
  <p>I am trying to get a query containing all (users/uid/order)</p>
  
  <p>I tried :</p>
  
  <pre><code>query = FirebaseDatabase.getInstance().getReference().child("users").orderByChild("order")
  </code></pre>
  
  <p>And </p>
  
  <pre><code>query = FirebaseDatabase.getInstance().getReference().child("users").orderByChild("order/status").equalTo("0");
  </code></pre>
  
  <p>but they don't work for me, thanks for any suggestions!</p>