Symfony主义DQL如何在主SELECT的SUM中添加SELECT

Question

实际上，我想使用Doctrine来复制此常规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此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();
}

但是运行此查询，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QueryBuilder实现此查询？

寻求帮助

Answer 1

您忘记放置

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

放入其他括号。

它看起来应该像这样：

$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'
);