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
select f.title,AVG(f.salary) from
(select*from titles as t
inner join salaries as s
on t.emp_no = s.emp_no) as f
group by title
order by AVG(f.salary);
