+ $qb = $this->createQueryBuilder('e')
+ ->select('count(e.id)')
+ ->leftJoin('e.tags', 't')
+ ->where('e.user=:userId')->setParameter('userId', $userId)
+ ->andWhere('t.id=:tagId')->setParameter('tagId', $tagId)
+ ;
+
+ return $qb->getQuery()->getSingleScalarResult();