Laravel 查询生成器一般错误 2031

Posted 2023-02-24

【中文标题】Laravel 查询生成器一般错误 2031

【英文标题】：Laravel query builder General error 2031

【发布时间】：2016-12-08 12:36:42

【问题描述】：

以下是我使用 Laravel 查询生成器的查询：

$begin = new DateTime('2016-07-01');
$end = new DateTime('2016-07-31');
$startDate = $begin->format('Y-m-d 00:00:00');
$endDate = $end->format('Y-m-d 23:59:59');
$deposit = $depositModel->select(DB::raw('user_deposit.user_id as user_id, sum(user_deposit.amount) as total_deposit, null as total_withdraw'))
                        ->whereBetween('date_time', [$startDate, $endDate])
                        ->where('user_deposit.status', 1)
                        ->groupBy('user_deposit.user_id');
$withdraw = $withdrawModel->select(DB::raw('user_withdraw.user_id as user_id, null as total_deposit, sum(user_withdraw.amount) as total_withdraw'))
                        ->whereBetween('user_withdraw.created_at', [$startDate, $endDate])
                        ->where('user_withdraw.status', 1)
                        ->groupBy('user_withdraw.user_id');
$deposit = $deposit->unionAll($withdraw);
$transaction = DB::table(DB::raw("($deposit->toSql()) t"))
                  ->select('user_id', DB::raw("sum(total_deposit) as total_deposit_amount, sum(total_withdraw) as total_withdraw_amount"))
                  ->groupBy('user_id')
                  ->get();

我希望得到如下结果：

"transaction": [
            
                "user_id": 2,
                "total_deposit_amount": "101.00",
                "total_withdraw_amount": "50.50"
            ,
            
                "user_id": 5,
                "total_deposit_amount": null,
                "total_withdraw_amount": "50.50"
            
        ]

但我不断收到 SQLSTATE[HY000]：一般错误：2031。所以我在查询上使用了 toSql() 来获取原始的 sql 查询，并尝试在 mysql 中运行它并生成了如上预期的结果。

下面是运行toSql()后的查询

SELECT`user_id`, SUM(total_deposit) AS total_deposit_amount, SUM(total_withdraw) AS total_withdraw_amount 
FROM (( SELECT user_deposit.user_id AS user_id, SUM(user_deposit.amount) AS total_deposit, null AS total_withdraw 
        FROM `user_deposit` 
        WHERE`date_time` BETWEEN '2016-07-01' AND '2016-07-31' 
        AND `user_deposit`.`status` = 1 
        GROUP BY `user_deposit`.`user_id`) 
        UNION ALL (SELECT user_withdraw.user_id AS user_id, null AS total_deposit, SUM(user_withdraw.amount) AS total_withdraw 
                   FROM `user_withdraw` 
                   WHERE `user_withdraw`.`created_at` BETWEEN '2016-07-01' AND '2016-07-31' 
                   AND `user_withdraw`.`status` = 1
                   GROUP BY `user_withdraw`.`user_id`)) t 
        GROUP BY `user_id`

所以问题是，我的查询生成器出了什么问题？为什么原始 sql 可以工作，而查询生成器却不行？

谢谢

【问题讨论】：

为什么不把不涉及raw的原代码贴出来呢

@e4c5 已经更新了

我有点困惑，很明显你的 laravel 代码使用的是 raw，但你说 raw 查询有效。那么它不起作用是什么？？

@e4c5 Laravel 代码给了我错误，而下面的原始 sql 正在返回我的结果。我知道 laravel 代码与原始 sql 完全一样，这就是为什么我不知道为什么它不能正常工作

【参考方案1】：

经过大量研究，我似乎错过了这个

mergeBindings($sub->getQuery())

我的代码：

$transaction = DB::table(DB::raw("($deposit->toSql()) t"))
                  ->mergeBindings($sub->getQuery())  // this is required for selecting from subqueries
                  ->select('user_id', DB::raw("sum(total_deposit) as total_deposit_amount, sum(total_withdraw) as total_withdraw_amount"))
                  ->groupBy('user_id')
                  ->get();

【讨论】：

谢谢！感谢您的研究，节省了我的时间！就我而言，我有一个带有自己绑定的子查询。