题解 | #统计出当前各个title类型对应的员工当前薪水对应的平均工资#
统计出当前各个title类型对应的员工当前薪水对应的平均工资
http://www.nowcoder.com/practice/c8652e9e5a354b879e2a244200f1eaae
join+group by + order by
逆序排列 ASC
select titles.title,AVG(salaries.salary) as avg
from titles join salaries
where titles.emp_no = salaries.emp_no
group by titles.title
order by avg(salaries.salary) desc;
