Question

我想根据两个特定的日期计算我花在基金上的钱的总和，我已经尝试使用几个queires这样做，但它们似乎都没有效果。下面分别是表格和查询

     Product_ID----ProductName------price------OrderDate
    ---  1  --------  Chair -------- 7 ------ 2015-01-05
    ---  2  --------  Lamp --------- 14 ----- 2015-01-16
    ---  3  --------  Table -------- 9 ------ 2015-02-25

SELECT SUM(price) AS TotalPrice FROM orders
HAVING OrderDate >='2015-01-05' AND <= '2015-01-16'

Answer 1

SELECT SUM(price) AS TotalPrice 
FROM orders
WHERE OrderDate >= '2015-01-05' AND OrderDate <= '2015-01-16'

或

SELECT SUM(price) AS TotalPrice 
FROM orders
WHERE OrderDate between '2015-01-05' AND '2015-01-16'

Answer 2

更改

HAVING OrderDate >='2015-01-05' AND <= '2015-01-16'

要

WHERE OrderDate >='2015-01-05' OrderDate AND <= '2015-01-16'

根据特定的日期集从MySQL获取数据

2 个答案: