title: ERROR: Schema "x" does not exist
body: <p>I'm attempting to select the users from a 'users' table that have the most occurrences of their 'order_id' property in the 'shipments' table. This is what I've tried:</p>
  
  <pre><code>SELECT users.first_name, users.email, shipments.count(order_id) 
      FROM users, shipments
      WHERE shipments.order_id = users.current_order_id
      GROUP by shipments.order_id
      ORDER by shipments.count(order_id) DESC
      LIMIT 25
  </code></pre>
  
  <p>But I'm getting an error of:</p>
  
  <pre><code>ERROR:  schema "shipments" does not exist
  </code></pre>
  
  <p>Any ideas?</p>