title: Django orm group by multiple columns
body: <p>How to perform a multiple column group by in Django? <br>
  I have only seen examples on one column group by.<br>
  Below is the query i am trying to convert to Django ORM.</p>
  
  <pre><code>SELECT order_id,city,locality,login_time,sum(morning_hours),sum(afternoon_hours),sum(evening_hours),sum(total_hours) 
  FROM orders 
  GROUPBY order_id,city,locality,login_time`
  </code></pre>