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 departments.dept_no,dept_name,title ,count(*) from departments
join dept_emp on departments.dept_no = dept_emp.dept_no
join titles on dept_emp.emp_no = titles.emp_no
GROUP BY
departments.dept_no, departments.dept_name, titles.title
ORDER BY
departments.dept_no ASC, titles.title ASC;
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