题目描述:
SQL架构
Employee 表包含所有员工,他们的经理也属于员工。每个员工都有一个 Id,此外还有一列对应员工的经理的 Id。
给定 Employee 表,编写一个 SQL 查询,该查询可以获取收入超过他们经理的员工的姓名。在上面的表格中,Joe 是唯一一个收入超过他的经理的员工。
方法1:
主要思路:
# Write your MySQL query statement below
select a.name as Employee
from employee as a,employee as b
where a.managerid=b.id and a.salary>b.salary;
方法2:使用join
主要思路:
# Write your MySQL query statement below
select a.name as Employee
from employee as a join employee as b
on a.managerid=b.id and a.salary>b.salary;