title: how to retrive values form RawQuerySet in django?
body: <p><strong>my input query is</strong> </p>
  
  <pre><code>query = "select * from tab1 left join tab2 on tab2.patient_id =tab1.patient_id ,tab3 left join tab4 on tab4.patient_id =tab3.patient_id"
  
  data = model_name.objects.raw(query)
  </code></pre>
  
  <p>How do you retrieve values from a <code>RawQuerySet</code>?</p>