title: performing self joins with fql
body: <pre><code>SELECT f1.uid1, f1.uid2
  FROM friend AS f1
  JOIN friend AS f2
      ON f1.uid1 = f2.uid1
          AND f2.uid2 = me()
  JOIN friend AS f3
      ON f1.uid2 = f3.uid2
          AND f3.uid1 = me()
  </code></pre>
  
  <p>That query gets me the following error:</p>
  
  <pre><code>{
    "error": {
      "message": "(#601) Parser error: unexpected 'AS' at position 40.", 
      "type": "OAuthException", 
      "code": 601
    }
  }
  </code></pre>
  
  <p>Does FQL not support self joins? If it does how does it work if you can't alias tables with AS?</p>