题解 | #统计各个部门的工资记录数#
统计各个部门的工资记录数
https://www.nowcoder.com/practice/6a62b6c0a7324350a6d9959fa7c21db3
select
d.dept_no as dept_no,
departments.dept_name as dept_name,
count(s.salary) as sum
from
dept_emp as d
inner join salaries as s on d.emp_no = s.emp_no
inner join departments on d.dept_no = departments.dept_no
group by
d.dept_no
order by
d.dept_no asc
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算法太卷啦
