php - 获取点的总和（表中的列）按 CustomerID 分组，条件为日期（持续时间）

Question

我有一张交易表，因为每个客户都有几笔交易，每笔交易都有积分。

我需要运行一个 mysql 查询来查找每个客户在一定时间内的积分总和。

每笔交易都有一个 CustomerID 、 Points 、 TranactionDate

问题是我只需要为日期范围在两个日期之间的交易找到 SUM(Points) GroupBY CustomerID。

像这样：

SELECT SUM(SELECT `Points` FROM `transaction` 
    WHERE Date BETWEEN '30/09/2012' AND '4/10/2012') 
    GROUP BY `CustomerID`

请我需要上述查询的等效查询。

提前致谢

Answer 1

SELECT SUM(Points) as customerPoints FROM transaction 
    WHERE Date BETWEEN '30/09/2012' AND '4/10/2012' 
    GROUP BY CustomerID

Answer 2

SELECT `CustomerID`, SUM(`Points`) AS `Points`
FROM `transaction`
WHERE `Date` BETWEEN '30/09/2012' AND '4/10/2012'
GROUP BY `CustomerID`