title: How to add 2 collections in Firestore using React Native?
body: <p>I want to add 2 collections in Firestore in React Native. 
  Like <code>JOIN</code> can be used to add 2 tables. Is there any alternative for <code>JOIN</code> in Firestore to add collections?</p>
  
  <p><a href="https://i.stack.imgur.com/EZAQ6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EZAQ6.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/js9UQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/js9UQ.png" alt="enter image description here"></a></p>
  
  <p>I want to add these 2 collections <strong>users</strong> and <strong>users_2</strong>
  How can I do this? Please help</p>