如何使用Symfony QueryBuilder检索实体ID？

I'm trying to personalize a symfony 2.4 repository query to retrieve only some fields. Everything is ok with flat fields but when retrieving Entity fields, I only get the id (by default) but not the whole entity data. My query:

    $select = $this->createQueryBuilder('ca')
    ->select('ca.id, ca.name')
    ->leftJoin('ca.users', 'user')
    ->addSelect('(user) as users'); 

    $select->setMaxResults($count);

    return $select->getQuery()->getResult();

The result is: [{id: 1, name: "Some name", users: 1}, ...]

How can I change this query for users to contain the whole user data, like id, name, address, etc.?

This works for me:

$select = $this->createQueryBuilder('ca')
    ->select('partial ca.{id, name}, users')
    ->leftJoin('ca.users', 'users');

$select->setMaxResults($count);

return $select->getQuery()->getArrayResult();

change this:

->select('ca.id, ca.name')

to this:

->select('ca')

You should try this way. You can use Partial.

$select = $this->createQueryBuilder('ca')
->select('partial ca.{id, name}')
->leftJoin('ca.users', 'users')
->addSelect('users'); 

A detailed description of this issue is available here. Doctrine2: Cannot select entity through identification variables without choosing at least one root entity alias

i hope this will useful for you.

$qb = $this->em->createQueryBuilder();
        $qb->select('o.id as order_id,o.createdBy as created_by,o.user as user_id');
        // for getting selective fields
        //$qb->select('o');        
        //for getting all fields in certain table
        $qb->from('Entity\Orders', 'o');
        $qb->setMaxResults(1); 
        // for getting single record only.
        return $qb->getQuery()->getOneOrNullResult(); 
        // for getting single record or null record.
        //return $qb->getQuery()->getResult(); 
        // for getting multiple records.  

feel free to ask any query regarding it.