我有一个如下表
+----+---------+-------+-----+----------+ | id | user_id | price | qty | category | +----+---------+-------+-----+----------+
我有一个数据库查询
SELECT *,(SELECT `login` FROM `users` WHERE `users`.`user_id`=`warehouse`.`user_id`) AS `login`, (`price`*`qty`) AS `total_price` FROM `warehouse`
所以我需要什么......我需要下一个带有总价摘要的列,其中行是相同的类别
编辑
表格示例
CREATE TABLE IF NOT EXISTS `warehouse` ( `id` int(11) NOT NULL DEFAULT 0, `user_id` int(11) DEFAULT NULL, `price` int(11) DEFAULT NULL, `qty` int(11) DEFAULT NULL, `category` int(11) DEFAULT NULL ); INSERT INTO `warehouse` (`id`, `user_id`, `price`, `qty`, `category`) VALUES (1, 1, 10, 5, 1), (2, 1, 15, 2, 1), (3, 1, 8, 3, 1), (4, 1, 28, 10, 1), (5, 1, 10, 1, 2); CREATE TABLE IF NOT EXISTS `users` ( `user_id` int(11) DEFAULT NULL, `login` varchar(32) DEFAULT NULL ); INSERT INTO `users` (`user_id`, `login`) VALUES (1, 'test');
我的查询结果
+----+---------+-------+-----+----------+-------+-------------+ | id | user_id | price | qty | category | login | total_price | +----+---------+-------+-----+----------+-------+-------------+ | 1 | 1 | 10 | 5 | 1 | test | 50 | +----+---------+-------+-----+----------+-------+-------------+ | 2 | 1 | 15 | 2 | 1 | test | 30 | +----+---------+-------+-----+----------+-------+-------------+ | 3 | 1 | 8 | 3 | 1 | test | 24 | +----+---------+-------+-----+----------+-------+-------------+ | 4 | 1 | 28 | 10 | 2 | test | 280 | +----+---------+-------+-----+----------+-------+-------------+ | 5 | 1 | 10 | 1 | 1 | test | 10 | +----+---------+-------+-----+----------+-------+-------------+
我需要什么
+----+---------+-------+-----+----------+-------+-------------+--------------------------+ | id | user_id | price | qty | category | login | total_price | sum_category_total_price | +----+---------+-------+-----+----------+-------+-------------+--------------------------+ | 1 | 1 | 10 | 5 | 1 | test | 50 | 114 | +----+---------+-------+-----+----------+-------+-------------+--------------------------+ | 2 | 1 | 15 | 2 | 1 | test | 30 | 114 | +----+---------+-------+-----+----------+-------+-------------+--------------------------+ | 3 | 1 | 8 | 3 | 1 | test | 24 | 114 | +----+---------+-------+-----+----------+-------+-------------+--------------------------+ | 4 | 1 | 28 | 10 | 2 | test | 280 | 280 | +----+---------+-------+-----+----------+-------+-------------+--------------------------+ | 5 | 1 | 10 | 1 | 1 | test | 10 | 114 | +----+---------+-------+-----+----------+-------+-------------+--------------------------+
最佳答案
我认为这应该可以解决您的问题:
SELECT *,(SELECT `login` FROM `users` WHERE `users`.`user_id`=`warehouse`.`user_id`) AS `login`, (`price`*`qty`) AS `total_price`
FROM warehouse join (select category, sum((`price`*`qty`)) AS `total_price` from warehouse group by category) as totals on warehouse.category=totals.category
关于具有相同特定列的列中的mysql汇总值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26212136/