Leetcode刷题121-181. 超过经理收入的员工(MySQL和Oracle解法！！！)

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Come from : [https://leetcode-cn.com/problems/employees-earning-more-than-their-managers/]

181. Employees Earning More Than Their Managers

1.Question
2.Answer
3.我的收获

1.Question

SQL架构
The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id.

+----+-------+--------+-----------+
| Id | Name  | Salary | ManagerId |
+----+-------+--------+-----------+
| 1  | Joe   | 70000  | 3         |
| 2  | Henry | 80000  | 4         |
| 3  | Sam   | 60000  | NULL      |
| 4  | Max   | 90000  | NULL      |
+----+-------+--------+-----------+

Given the Employee table, write a SQL query that finds out employees who earn more than their managers. For the above table, Joe is the only employee who earns more than his manager.

+----------+
| Employee |
+----------+
| Joe      |
+----------+

2.Answer

easy 类型题目。简单的SQL语句查询（不多BB）.

AC代码如下（Oracle和MySQL都能AC）：

# Write your MySQL query statement below
SELECT a.Name Employee 
FROM Employee a, Employee b
WHERE a.ManagerId=b.Id and a.Salary>b.Salary

3.我的收获

fighting。。。
注意总结 Oracle 和 MySQL的语法区别~

2019/7/11 胡云层于南京 121