Question

我有一张订单日志表。每个用户更改都已记录在order_logs中。我想按状态获取总数，并且我只希望最后一个状态获得价格差。所以我写了第二步的长查询：

SELECT SUM(price_difference) FROM order_logs WHERE user_id=43
AND order_id IN (SELECT order_id FROM order_logs WHERE 
id IN(SELECT id FROM order_logs WHERE 
id IN (SELECT MAX(id) FROM order_logs WHERE user_id=43 
GROUP BY order_id HAVING SUM(price_difference) >0) AND status="approved"));

我通过以下代码获得状态计数：

$orderLogs = OrderLog::where('user_id', 42)
        ->selectRaw('status, COUNT(*) as count')
        ->whereRaw('id IN (select MAX(id) FROM order_logs WHERE user_id=42 GROUP BY order_id)')
        ->groupBy('status')->get();

此结果可能是这样的：

Array
(
    [0] => Array
        (
            [status] => approved
            [count] => 195
        )

    [1] => Array
        (
            [status] => cancelled
            [count] => 42
        )

    [2] => Array
        (
            [status] => next_period_approved
            [count] => 2
        )

    [3] => Array
        (
            [status] => not_reach
            [count] => 115
        )

    [4] => Array
        (
            [status] => pending
            [count] => 1
        )

)

我想建立雄辩的查询order_log，其中包含来自订单表的订单总价和price_difference仅批准状态。可能是这样：

Array
(
    [0] => Array
        (
            [status] => approved
            [count] => 195,
            [total_price] => 3040.00,
            [price_difference] => 1020.00
        )

    [1] => Array
        (
            [status] => cancelled
            [count] => 42,
            [total_price] => 4040.00
        )

    [2] => Array
        (
            [status] => next_period_approved
            [count] => 2,
            [total_price] => 5040.00
        )

    [3] => Array
        (
            [status] => not_reach
            [count] => 115,
            [total_price] => 6040.00
        )

    [4] => Array
        (
            [status] => pending
            [count] => 1,
            [total_price] => 140.00
        )

)

Ps：订单日志表语法：

CREATE TABLE `order_logs` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `order_id` int(10) unsigned NOT NULL,
  `user_id` int(10) unsigned NOT NULL,
  `log_info` longtext COLLATE utf8mb4_unicode_ci NOT NULL,
  `price_difference` decimal(10,2) NOT NULL DEFAULT '0.00',
  `status` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
  `created_at` timestamp NULL DEFAULT NULL,
  `updated_at` timestamp NULL DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `order_logs_order_id_foreign` (`order_id`),
  KEY `order_logs_user_id_foreign` (`user_id`),
  CONSTRAINT `order_logs_order_id_foreign` FOREIGN KEY (`order_id`) REFERENCES `orders` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `order_logs_user_id_foreign` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

orders表语法：

CREATE TABLE `orders` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `domain_id` int(10) unsigned DEFAULT '3',
  `related_user_id` int(10) unsigned DEFAULT NULL,
  `price` decimal(10,2) NOT NULL,
  `status` varchar(255) COLLATE utf8mb4_unicode_ci NOT NULL,
  `created_at` timestamp NULL DEFAULT NULL,
  `updated_at` timestamp NULL DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `orders_user_id_foreign` (`user_id`),
  KEY `orders_domain_id_foreign` (`domain_id`),
  CONSTRAINT `orders_domain_id_foreign` FOREIGN KEY (`domain_id`) REFERENCES `domains` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
  CONSTRAINT `orders_user_id_foreign` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

有帮助吗？非常感谢您的帮助。

复杂查询的口才查询

0 个答案: