题解 | #汇总各个部门当前员工的title类型的分配数目#
汇总各个部门当前员工的title类型的分配数目
https://www.nowcoder.com/practice/4bcb6a7d3e39423291d2f7bdbbff87f8
select
t2.dept_no,
t1.dept_name,
t3.title,
count(title) as count
from
departments as t1
join dept_emp as t2 on t1.dept_no = t2.dept_no
join titles as t3 on t2.emp_no = t3.emp_no
group by t2.dept_no,t1.dept_name,t3.title
order by t2.dept_no;