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,dept_name,title,count(title) count from dept_emp d join titles t on d.emp_no = t.emp_no join departments d2 on d2.dept_no = d.dept_no group by dept_no,dept_name,title order by d.dept_no,title