Question

您好我有两个表用于投资组合和库存数据详细信息。我想通过价格的变化找出用户组合的总增长量。例如：

用户A：

股票A -4.41

股票B -1.49

股票C 0.38

股票D 1.43

用户B

股票A -2.05

股票B .05

我想要显示如下表：USER Growth

                        A      -4.09

                        B      -2.1

这是我的两个表：一个投资组合，其中所有买卖信息都由user_id保留用户

 +-------------------+---------------+------+-----+---------+----------------+
 | Field             | Type          | Null | Key | Default | Extra          |
 +-------------------+---------------+------+-----+---------+----------------+
 | portfolio_ID      | int(11)       | NO   | PRI | NULL    | auto_increment |
 | user_id           | int(11)       | NO   |     | NULL    |                |
 | contest_id        | int(11)       | NO   |     | NULL    |                |
 | company_id        | int(11)       | NO   |     | NULL    |                |
 | share_amount      | int(11)       | NO   |     | NULL    |                |
 | buy_price         | decimal(9,2)  | NO   |     | NULL    |                |
 | total_buy_price   | decimal(10,4) | NO   |     | NULL    |                |
 | buy_date          | date          | NO   |     | NULL    |                |
 | commision         | decimal(9,2)  | NO   |     | NULL    |                |
 | sell_share_amount | int(11)       | NO   |     | NULL    |                |
 | sell_price        | decimal(10,2) | NO   |     | NULL    |                |
 | total_sell_price  | decimal(16,2) | NO   |     | NULL    |                |
 | sell_date         | date          | NO   |     | NULL    |                |
 | sell_commision    | decimal(9,2)  | NO   |     | NULL    |                |
 +-------------------+---------------+------+-----+---------+----------------+

接下来的每日股票表：

 +-----------------+------------------+------+-----+---------+-------+
 | Field           | Type             | Null | Key | Default | Extra |
 +-----------------+------------------+------+-----+---------+-------+
 | company_id      | int(11)          | NO   | PRI | NULL    |       |
 | entry_date      | date             | NO   | PRI | NULL    |       |
 | entry_timestamp | int(10) unsigned | NO   |     | NULL    |       |
 | open            | decimal(16,2)    | NO   |     | NULL    |       |
 | high            | decimal(16,2)    | NO   |     | NULL    |       |
 | low             | decimal(16,2)    | NO   |     | NULL    |       |
 | ltp             | decimal(16,2)    | NO   |     | NULL    |       |
 | ycp             | decimal(16,2)    | NO   |     | NULL    |       |
 | cse_price       | decimal(9,2)     | NO   |     | NULL    |       |
 | cse_volume      | decimal(18,2)    | NO   |     | NULL    |       |
 | total_trade     | int(30)          | NO   |     | NULL    |       |
 | total_volume    | int(30)          | NO   |     | NULL    |       |
 | total_value     | decimal(18,4)    | NO   |     | NULL    |       |
 | changes         | float(10,2)      | NO   |     | NULL    |       |
 | floating_cap    | float(16,2)      | NO   |     | NULL    |       |
 +-----------------+------------------+------+-----+---------+-------+

这是我正在使用的sql：

 SELECT
 po.user_id,
 ((e.ltp-po.buy_price)/po.buy_price) AS growth
 FROM eod_stock AS e
 LEFT OUTER JOIN portfolio AS po
 ON e.company_id = po.company_id
 WHERE po.contest_id = 2
 GROUP BY po.user_id;

但它只返回第一个变化而不是增长变化的总和，然后我将其修改为：

 SELECT
 po.user_id,
 SUM((e.ltp-po.buy_price)/po.buy_price) AS growth
 FROM eod_stock AS e
 LEFT OUTER JOIN portfolio AS po
 ON e.company_id = po.company_id
 WHERE po.contest_id = 2
 GROUP BY growth
 ORDER BY growth DESC;

但它会生成错误代码1056，无法成长

这里是sql小提琴： http://sqlfiddle.com/#!2/b3a83/2

感谢阅读。

Answer 1

您不想按growth分组。你为什么要改变group by？

SELECT po.user_id, SUM((e.ltp-po.buy_price)/po.buy_price) AS growth
FROM eod_stock e LEFT OUTER JOIN
     portfolio po
     ON e.company_id = po.company_id
WHERE po.contest_id = 2
GROUP BY po.user_id
ORDER BY growth DESC;

但是，我怀疑你可能真的想要最大值减去最小值：

SELECT po.user_id,
       (MAX(e.ltp-po.buy_price) - MIN(e.ltp-po.buy_price))/po.buy_price) AS growth
FROM eod_stock e LEFT OUTER JOIN
     portfolio po
     ON e.company_id = po.company_id
WHERE po.contest_id = 2
GROUP BY po.user_id
ORDER BY growth DESC;

这提供了一段时间的整体视图。但是，它并没有显示方向。所以50到100之间的值与从100到50的值相同。这可以修复，如果这是你真正想要的。

MySQL增长和增长顺序的变化总和

1 个答案: