title: Unable to retrieve post impressions with Facebook FQL
body: <p>I'm trying to query FB for a Page Stream using FQL in PHP, and I get all the data except impressions. The FB_ACCESS_TOKEN used is the OAuth token for my FB App, where I have granted the following scope: <i>offline_access,manage_pages,email,read_insights,sms,publish_stream</i></p>
  
  <p>Code example:</p>
  
  <pre><code>$this-&gt;fb-&gt;api(array(
    "method" =&gt; "fql.multiquery",
    "queries" =&gt; json_encode(array(
      "post" =&gt; "SELECT post_id, source_id, updated_time, created_time, actor_id, 
                        message, attachment, impressions, likes, privacy, 
                        permalink, comments 
                 FROM stream WHERE source_id='".$source_id."' 
                             AND created_time &gt; '".$date_updated."'",
      "comment" =&gt; "SELECT post_id, fromid, time, text, id, likes, object_id 
                    FROM comment WHERE post_id IN (SELECT post_id FROM #post) 
                                 AND time&gt; '".$date_updated."'"
    )), access_token" =&gt; FB_ACCESS_TOKEN
  ));
  </code></pre>
  
  <p>Here is the example output:</p>
  
  <pre><code>[...]
  [0] =&gt; Array(
    [post_id] =&gt; 107112482661088_236459409726394
    [source_id] =&gt; 107112482661088
    [updated_time] =&gt; 1312884237
    [created_time] =&gt; 1312884237
    [actor_id] =&gt; 608795063
    [message] =&gt; funker jo ikke detta nå da :( får ikke spilt i det hele tatt :@
    [attachment] =&gt; Array(
      [description] =&gt; 
    )
    [impressions] =&gt; 
    [likes] =&gt; Array(
      [href] =&gt; http://www.facebook.com/browse/?type=likes&amp;id=236459409726394
      [count] =&gt; 0
      [sample] =&gt; Array()
      [friends] =&gt; Array()
      [user_likes] =&gt; 
      [can_like] =&gt; 
    )
    [privacy] =&gt; Array(
      [value] =&gt; 
    )
    [permalink] =&gt; http://www.facebook.com/hacktheplanet.no/posts/236459409726394
    [comments] =&gt; Array(
      [can_remove] =&gt; 
      [can_post] =&gt; 
      [count] =&gt; 0
      [comment_list] =&gt; Array()
    )
  )
  [...]
  </code></pre>
  
  <p>Any suggestions or reasons why I don't get the impression data?</p>