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
表连接，连接条件为员工编号相同，然后算平均值，根据平均值排序
select
title,avg(salary) as 'avg(s.salary)'
from
titles t
join
salaries s
on
t.emp_no = s.emp_no
group by
title
order by
avg(salary)
;