SQL202 找出所有员工当前薪水salary情况

题目

请你找出所有员工具体的薪水salary情况，对于相同的薪水只显示一次,并按照逆序显示

解

方法1

select
   salary
from
  salaries

Group by salary
order by salary DESC

方法2

select
   salary
from
  salaries
Group by salary
order by salary DESC