symfony的ORM的学说查询

Question

我可以很方便地查询与内部联接

$qb = $this->createQueryBuilder('r') 
    ->innerJoin('UserBundle:User', 'u') 
    ->where('r.nick = u.id') 
    ->andWhere('r.odobera=:id') 
    ->setParameter('id', $id) 
    ->orderBy('r.time', 'DESC') 
    ->setMaxResults(50); 

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

它应该是一个查询吗？但在探查器中我有

SELECT t0.username AS [...] FROM users t0 WHERE t0.id = ? LIMIT 1 
Parameters: [1465] 
[Display runnable query] 
Time: 1.79 ms [ Explain query ] 
SELECT r0_.id AS id0, [...] FROM requests r0_ INNER [...] ORDER BY r0_.time DESC LIMIT 50 
Parameters: [1465] 
[Display runnable query] 
Time: 0.67 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['2072'] 
[Display runnable query] 
Time: 0.64 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['2386'] 
[Display runnable query] 
Time: 0.50 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['79'] 
[Display runnable query] 
Time: 0.50 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['2432'] 
[Display runnable query] 
Time: 0.50 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['40'] 
[Display runnable query] 
Time: 0.52 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['2090'] 
[Display runnable query] 
Time: 0.46 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['1044'] 
[Display runnable query] 
Time: 0.51 ms [ Explain query ] 
SELECT t0.username AS username1, [...] FROM users t0 WHERE t0.id = ? 
Parameters: ['27'] 
[Display runnable query] 
Time: 0.54 ms [ Explain query ] 

每个记录的每个“连接”的一个查询......为什么？

PS：本文只是为了让这篇文章更长，因为我不能提交问题“只是”这么多细节..但我认为我的问题解释得很好。顺便说一句：我问朋友，他有similiard问题）

Answer 1

你没有指定要选择什么，所以只是requests哪里水合。

您可以指定select()方法上查询生成器什么来滋润：

$qb = $this->createQueryBuilder('r') 
    ->select(array('r', 'u')) 
    ->innerJoin('UserBundle:User', 'u') 
    ->where('r.nick = u.id') 
    ->andWhere('r.odobera=:id') 
    ->setParameter('id', $id) 
    ->orderBy('r.time', 'DESC') 
    ->setMaxResults(50); 

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