LeetCode（数据库）- 项目员工 I

Posted 2021-08-09 Lux_Sun

题目链接：点击打开链接

题目大意：略。

解题思路：略。

AC 代码

SELECT project_id, ROUND(AVG(experience_years), 2) average_years
FROM Project p, Employee e
WHERE p.employee_id = e.employee_id
GROUP BY 1