Symfony2 QueryBuilder中带有count和group的SQL查询

Question

我需要你的帮助.我有这个SQL查询:

SELECT * , COUNT( * ) AS count FROM mytable GROUP BY email ORDER BY id DESC LIMIT 0 , 30

但我想在Symfony2中使用Doctrine和createQueryBuilder()来完成这项工作.我试试这个,但没有用:

$db = $this->createQueryBuilder('s');
$db->andWhere('COUNT( * ) AS count');
$db->groupBy('s.email');
$db->orderBy('s.id', 'DESC');

你能帮我吗 ？谢谢 :)

Answer 1

您需要运行2个查询:

$db = $this->createQueryBuilder();
$db
    ->select('s')
    ->groupBy('s.email')
    ->orderBy('s.id', 'DESC')
    ->setMaxResults(30);

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

和

$db = $this->createQueryBuilder();
$db
    ->select('count(s)')
    ->groupBy('s.email')
    //->orderBy('s.id', 'DESC')
    ->setMaxResults(1);

$qb->getQuery()->getSingleScalarResult();