题解 | 统计各个部门平均薪资
统计各个部门平均薪资
https://www.nowcoder.com/practice/4722fdf89a4c43eebb58d61a19ccab31
select st.department as department,
round(avg(sa.normal_salary - sa.dock_salary), 3) as avg_salary
from staff_tb as st
left join salary_tb as sa on st.staff_id = sa.staff_id
where (sa.normal_salary - sa.dock_salary) between 4000 and 30000
group by st.department
order by avg_salary desc
#好坑，题目没有讲剔除的薪资是实际薪资还是基本工资，很坑
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