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
SQL:
select max(salary)-min(salary) as growth
from salaries
where emp_no=10001
