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) AS count
FROM
dept_emp AS DE
LEFT JOIN titles AS T ON T.emp_no = DE.emp_no
LEFT JOIN departments AS D ON D.dept_no = DE.dept_no
GROUP BY
D.dept_no,
T.title
ORDER BY
D.dept_no ASC,
T.title ASC;
