问题利用Mysql实现多个sum计算（mysql多个sum）

网络编程问题利用Mysql实现多个sum计算（mysql多个sum） 10-18

MySQL是当今比较流行的关系型数据库管理系统，它的功能强大，支持查询多个列的求和。但是如果要同时求多个列的和，很多人会比较疑惑，毕竟SQL语句有很多种写法，比较容易出错。今天就来介绍一种基于MySQL实现多个sum计算的简单方法。

首先，我们准备一个测试表格如下所示：

![img](data:image/svg+xml;base64,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)

使用MySQL语句sum计算上面表格的要实现多个sum计算，按照如下SQL语句：

SELECT SUM(Field1),SUM(Field2),SUM(Field3),SUM(Field4) FROM TableName

之所以可以一次求得多个列的求和，是因为MySQL的select语句支持用英文逗号隔开，将所选择的字段名称通过英文逗号放在一起。

编辑：广州明生堂生物科技有限公司

标签：多个,语句,英文,逗号,表格