Home to make nested query in Doctrine 2 ?

Question

I would like to make this with Doctrine 2 :

SELECT *, 
 (SELECT action FROM operations_history
         WHERE timesheet.id = operations_history.timesheet_id
         ORDER BY operations_history.created DESC 
          LIMIT 1) as status 
FROM timesheet; 

Any Help? I would like to do it with createQueryBuilder(); if possible. Thanks.