How I can create multiple join with DQL - symfony

Question

How I can create multiple join with DQL , something like this in sql:
SELECT t,c,u FROM `user` AS t
LEFT JOIN (`contract` AS c, `car` AS u)
ON (t.id = c.`user_id` AND u.id = c.`unit_id` AND u.name = 'audi')
WHERE t.email = 'test#example.com';
Solve problem by another way, create sub-query:
$query = $this->createQueryBuilder('user')
->addSelect(
array('contract', 'car')
)
;
$query->leftJoin(
'user.contracts',
'contract',
Expr\Join::WITH,
'contract.id IN (
SELECT contract2.id
FROM DataBundle:User user2
INNER JOIN user2.contracts contract2
INNER JOIN contract2.car car2
WHERE user2.email = :email AND (
contract2.status = :status1 OR contract2.status = :status2
) AND car2.name = :name
)'
);
$query->leftJoin(
'contract.car',
'car'
);
$query->where('user.email = :email');
Maybe will be useful for someone.

Answer 1

See article for multiple join example :
DQL JOIN Syntax:
[[LEFT | INNER] JOIN <component_reference1>] [ON | WITH] <join_condition1> [INDEXBY] <map_condition1>,
[[LEFT | INNER] JOIN <component_reference2>] [ON | WITH] <join_condition2> [INDEXBY] <map_condition2>,
...
[[LEFT | INNER] JOIN <component_referenceN>] [ON | WITH] <join_conditionN> [INDEXBY] <map_conditionN>

Answer 2

You will end up with something like this:
SELECT user,contract,car
FROM user AS user
LEFT JOIN user.contract AS contract
LEFT JOIN contract.car AS car
WHERE user.email = 'test#example.com' AND car.name = 'audi';
Obviously you need to define your entities and set up the relations properly. I'd suggest following the example in the documentation and then working your way through a test case.
Please note that the use of abbreviations (t,c,u) for aliases has been declared a war crime by the United Nations and will be punished severally.