题解 | #查找排除当前最大、最小salary之后的员工的平均工资avg_salary#
查找排除当前最大、最小salary之后的员工的平均工资avg_salary
http://www.nowcoder.com/practice/95078e5e1fba4438b85d9f11240bc591
select avg(salary) as avg_salary
from salaries a
where to_date='9999-01-01'
and a.salary not in (select max(salary) from salaries where to_date='9999-01-01')
and a.salary not in (select min(salary) from salaries where to_date='9999-01-01')
这道题的解题思路的本质依然是avg函数 但是需要用 where 做一个筛选
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