[
ObjectA(id=1),
ObjectB(id=1),
ObjectA2(id=2),
null
]

$queryBuilder
    ->select('ta')
    ->addSelect('tb')
    ->innerJoin(TableB::class, 'tableB', Join::WITH,
        'ta.id = tb.tableAId')
    ->getQuery()->getResult();

[
   [ObjectA(id=1), ObjectB(id=1)],
   [ObjectA(id=2)]
]