题解 | #平均工资#
平均工资
https://www.nowcoder.com/practice/95078e5e1fba4438b85d9f11240bc591
方法一
select (sum(salary)-min(salary)-max(salary))/(count(salary)-2) avgsalary
from salaries
where to_date = "9999-01-01"
方法二
select avg(salary)
from salaries
where salary not in (
select max(salary)
from salaries
where to_date like '9999-01-01') and salary not in (
select min(salary)
from salaries
where to_date like '9999-01-01') and to_date = "9999-01-01"
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