Doctrine: Symfony Subquery

ตย. การใช้ Subquery ง่ายๆ ใน Doctrine 

select t.won,e.etot, s.username,s.country,r.points,r.rank FROM sf_guard_user s
INNER JOIN marks r ON r.user_id = s.id
inner join (select t.user_id,count(t.user_id)as won from topper t group by t.user_id) t on t.user_id=s.id
inner join (select e.user_id,count(e.user_id)as etot from exams e group by e.user_id) e on e.user_id=s.id
ORDER BY r.rank asc

// ============= Create subquery =============  //

$q= $this->createQuery(‘u’);

$wq =$q->createSubquery()
->select(‘t.user_id,count(t.user_id) won’)
->from(‘Topper t’)
->groupBy(‘t.user_id’);

$dq = $q->createSubquery()
->select(‘e.user_id,count(e.user_id) etot’)
->from(‘Exams d’)
->groupBy(‘d.user_id’);

$q->select(‘ t1.won, e1.dtot, u.username,u.country,r.points,r.rank’)
->innerJoin (‘u.Marks r ON r.user_id = u.id’)
->innerJoin (‘u.(‘.$wq->getDql().’) t1 on t1.user_id=u.id’)
->innerJoin (‘u.’.$dq->getDql().’ e1 on e1.user_id=u.id’)
->orderBy(‘r.rank asc’);

//echo $q->getSql();
return $q;