如何在Doctrine ORM中使用createQueryBuilder选择特定的列? [英] How can I select specific Columns with createQueryBuilder in Doctrine ORM?

问题描述

我正在使用Doctrine createQueryBuilder()在Symfony2中构造查询.但是，我不想占用此实体中的所有列.如何仅选择ID和名称?

I'm using Doctrine createQueryBuilder() to construct queries in Symfony2. But, I don't want to take all columns in this entity. How can I select only the ID and Name?

$query = $this->getEntityManager()->createQueryBuilder();
        $query
            ->select('d')
            ->from('AcmeBundle:Demo', 'd')
            ->leftjoin('d.otherEntity', 'o');

        $query->setMaxResults(10);
        $results = $query->getQuery()->getResult();

非常感谢您，

推荐答案

尝试关注，

$fields = array('d.id', 'd.name', 'o.id');
//$fields = 'partial d.{id, name}, partial o.{id}';  //if you want to get entity object

$query = $this->getEntityManager()->createQueryBuilder();
        $query
            ->select($fields)
            ->from('AcmeBundle:Demo', 'd')
            ->leftjoin('d.otherEntity', 'o');

        $query->setMaxResults(10);
        $results = $query->getQuery()->getResult();

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