题目描述

查找员工编号emp_no为10001其自入职以来的薪水salary涨幅值growth

CREATE TABLE `salaries` (

`emp_no` int(11) NOT NULL,

`salary` int(11) NOT NULL,

`from_date` date NOT NULL,

`to_date` date NOT NULL,

PRIMARY KEY (`emp_no`,`from_date`));

输入描述:

无

输出描述:

growth

28841

 

 

 

1 select max(salary) - min(salary) from salaries where emp_no = 10001