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
https://www.nowcoder.com/practice/c8652e9e5a354b879e2a244200f1eaae
select title, avg(s.salary) from titles t join salaries s on t.emp_no =s.emp_no group by title order by avg(s.salary)
