Leetcode Mysql 1075. 项目员工 I（DAY 15）

文章目录

• • 原题题目
  • 代码实现（首刷自解）

原题题目

代码实现（首刷自解）

# Write your MySQL query statement below
SELECT project_id,ROUND(SUM(experience_years) / COUNT(*),2) AS average_years
FROM project LEFT JOIN employee USING(employee_id)
GROUP BY project_id

标签：15,原题,1075,id,project,首刷,employee,years,Leetcode
来源： https://blog.csdn.net/qq_37500516/article/details/120820927