title: How to do an inner join on Facebook FQL
body: <p>Ok, so I'm querying two FQL tables: Events and event_members. On one query I get all events from the user and his friends (let's call this $events), and on the other query I get all the members 'attending' to all those events (let's call it $attendingmembers).
  Both queries are returned as arrays on php, and as you may already know FQL doesn't allow INNER JOINS. </p>
  
  <p>What I want to do is to "normalize" the data, so that I join both results and I get a single array with all the event details AND the amount of people attending to that event. Both arrays share a common KEY: eid.</p>
  
  <p>On sql it would be very easy... Inner JOIN. BUT on FQL there is no Inner join, so I think I should do the join 'php-side', with array_intersect o something similar, but i can't get to find the way to do it.</p>
  
  <p>Help is really appreciated!</p>