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 de.dept_no,ds.dept_name,ts.title,count(1) as count from dept_emp de join departments ds using(dept_no) join titles ts using(emp_no) group by de.dept_no,ds.dept_name,ts.title order by dept_no asc,title asc