Symfony Doctrine DQL 如何在主 SELECT 的 SUM 中添加 SELECT

Question

实际上，我想用 Doctrine 重现这个常规 SQL 查询：

SELECT SUM(b.nb_places * (SELECT pricing FROM param p WHERE t.date BETWEEN p.from_date AND p.to_date)) as gains from booking b INNER JOIN tour t ON b.tour_id = t.id;

根据两个日期之间的价格计算总收益。

我在存储库中编写了这个 DQL：

    public function allBooking() {
        $query = $this->manager->createQuery(
            'SELECT 
                 SUM(b.nbPlaces * SELECT p.pricing FROM \App\Entity\Param p WHERE t.date BETWEEN p.fromDate AND p.toDate)
        FROM App\Entity\Booking b JOIN b.tour t'
    );
    return $query->getResult();
}

但是运行这个查询，我得到了：

[Syntax Error] line 0, col 24: Error: Expected Literal, got 'SELECT' (500 Internal Server Error)

如何使用 DQL 或使用 QueryBuilder 实现此查询？

谢谢帮助

Answer 1

你忘了放

SELECT p.pricing FROM \App\Entity\Param p WHERE t.date BETWEEN p.fromDate AND p.toDate

放入额外的括号中。

应该是这样的：

$query = $this->manager->createQuery(
    'SELECT SUM(b.nbPlaces * (SELECT p.pricing FROM \App\Entity\Param p WHERE t.date BETWEEN p.fromDate AND p.toDate))
    FROM App\Entity\Booking b JOIN b.tour t'
);