MySQL查询将来自相同列的相同客户的产品价格值求和，并将结果显示在同一列中

2026-06-05 1 花语

为此，将SUM()与GROUPBY一起使用。让我们首先创建一个表-

create table DemoTable ( CustomerName varchar(100), Product_1_Price int, Product_2_Price int );

使用插入命令在表中插入一些记录-

insert into DemoTable values(John,67,89); insert into DemoTable values(David,769,890); insert into DemoTable values(David,987,1000); insert into DemoTable values(John,900,111);

使用select语句显示表中的所有记录-

select *from DemoTable;

这将产生以下输出-

+--------------+-----------------+-----------------+ | CustomerName | Product_1_Price | Product_2_Price | +--------------+-----------------+-----------------+ | John | 67 | 89 | | David | 769 | 890 | | David | 987 | 1000 | | John | 900 | 111 | +--------------+-----------------+-----------------+ 4 rows in set (0.00 sec)

以下是对值求和并显示相同客户的结果的查询-

select CustomerName,SUM(Product_1_Price) AS Total1,SUM(Product_2_Price) As Total2 from DemoTable group by CustomerName;

这将产生以下输出-

+--------------+--------+--------+ | CustomerName | Total1 | Total2 | +--------------+--------+--------+ | John | 967 | 200 | | David | 1756 | 1890 | +--------------+--------+--------+ 2 rows in set (0.00 sec)