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 d.dept_no,d.dept_name,t.title,count(t.title) from departments d join dept_emp e on d.dept_no= e.dept_no join titles t on t.emp_no = e.emp_no group by d.dept_no,d.dept_name,t.title order by d.dept_no asc,t.title
