DQL Select every rows having one column's MAX value

Question

Working with Symfony 2 and Doctrine, I\'m searching for a way to select every rows having the max value in a specific column.

Right now, I\'m doing it in two queries

Answer 1

For me when i trying to make a subquery i make:

->andWhere($qb->expr()->eq('affaire', $qb2->getDql()));