title: entity framework join
body: <p>i have 2 table (user, user_profile) without a explicit relationship in the sql db. and i can't add it to the db.</p>
  
  <p>so, i can't do this:</p>
  
  <pre><code>db.user.include("user_profile")
  </code></pre>
  
  <p>the attribute in for the join is user_id</p>
  
  <p>is possible do anything like this?</p>
  
  <pre><code>db.user.join("user_profile On user.id = user_profile.user_id")
  </code></pre>
  
  <p>How can i do that?</p>
  
  <p>thanks</p>