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
http://www.nowcoder.com/practice/4bcb6a7d3e39423291d2f7bdbbff87f8
SELECT
DISTINCT
T1.dept_no,
T2.dept_name,
T3.title,
COUNT(1) OVER(PARTITION BY T1.dept_no,T3.title) AS COUNT
FROM
dept_emp T1
LEFT JOIN
departments T2
ON T1.dept_no = T2.dept_no
LEFT JOIN
titles T3
ON T1.emp_no = T3.emp_no
ORDER BY
T1.dept_no,
T3.title
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