Question

我正在尝试执行多对多查询。

这个MySQL查询给了我我想要的东西：

select * from service_offer 
left join service on service.id_service = service_offer.id_service
left join user on user.id_user = service_offer.id_user

我如何处理Symfony？

我尝试过类似的事情：

public function findAllServiceOffers(){
    $query = $this->getEntityManager()
        ->createQuery(
        'SELECT s, u FROM AppBundle:Service s
        INNER JOIN AppBundle:User u'
    );

    try {
        return $query->getResult();
    } catch (\Doctrine\ORM\NoResultException $e) {
        return null;
    }
}

但我得到了这个错误：

[语法错误]第0行，第1栏：错误：预期的Doctrine \ ORM \ Query \ Lexer :: T_WITH，得到了字符串的结尾。

如果我添加WHERE或WITH子句，则执行查询，但我有NULLs值...

提前致谢。

Answer 1

我很快会给你两个例子：

//use Doctrine\DBAL\Connection;

/** @var Connection $conn */
$conn = $this->getDoctrine()->getConnection();
$aResults = $conn->executeQuery($sql)->fetchAll();

OR

//use Doctrine\DBAL\Connection;

/** @var Connection $conn */
$conn = $this->getDoctrine()->getConnection();
$query = $conn->createQueryBuilder()->select('fields')->from('table1','alias_table1');
$query->leftJoin('alias_table1','table2','alias_table2','alias_table1.ID = alias_table2.ID');
$aResults = $query->execute()->fetchAll();

OR

//use Doctrine\ORM\EntityManager;
/** @var EntityManager $em */
$em = $this->getDoctrine()->getManager();
$sSQL = $em->createQuery("SELECT t1,t2 FROM YourBundle:Table1 t1 LEFT JOIN t1.fieldOfEntityDoctrine t2 WHERE t2.ID = 'example'")->getSQL();

ManyToMany查询

1 个答案: