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
distinct
de.dept_no,
d.dept_name,
count(salary) over(partition by de.dept_no)
from
departments d
inner join
dept_emp de
on
d.dept_no = de.dept_no
inner join
salaries s
on
de.emp_no = s.emp_no
order by
de.dept_no
distinct
de.dept_no,
d.dept_name,
count(salary) over(partition by de.dept_no)
from
departments d
inner join
dept_emp de
on
d.dept_no = de.dept_no
inner join
salaries s
on
de.emp_no = s.emp_no
order by
de.dept_no
