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 a.dept_no,dept_name,title ,count(*) from dept_emp as a join titles as b on a.emp_no=b.emp_no join departments as c on a.dept_no =c.dept_no group by a.dept_no ,title,dept_name --筛选dept_no，title,dept_name order by a.dept_no ,title 按照这两种进行排序
