LeetCode--181.超过经理收入的员工

建表

Create table If Not Exists Employee (Id int, Name varchar(255), Salary int, ManagerId int);
Truncate table Employee;
insert into Employee (Id, Name, Salary,ManagerId) values ('1', 'Joe', '70000', '3');
insert into Employee (Id, Name, Salary,ManagerId) values ('2', 'Henry', '80000', '4');
insert into Employee (Id, Name, Salary,ManagerId) values ('3', 'Sam', '60000', Null);
insert into Employee (Id, Name, Salary,ManagerId) values ('4', 'Max', '90000', Null);

表自身关联查询即可

select  e1.Id, e1.Name, e1.Salary
 from employee e1, employee e2
 where e1.ManagerId = e2.Id
 and e1.Salary > e2.Salary

子查询做法

select name Employee from employee e1
where e1.Salary > (select e2.Salary from employee e2 where e1.ManagerId = e2.Id)