title: Entity Framework exclude result
body: <p>I would like to exlude a query result.</p>
  
  <p>E.g I have:</p>
  
  <pre><code>Table_1 (Id, name)
  Table_2 (Id, Table_1_Id)
  </code></pre>
  
  <p>And, I want to write query which return only the result from <code>Table_1</code> which does not exist in <code>Table_2</code>. It is a relation of <strong>one to many</strong>.</p>
  
  <p>Any ideas ?</p>
  
  <pre><code>var query = db.Table_1.Include("Table_2").Where(????
  </code></pre>