SQL： 570. 至少有五位直接下属的经理 SQL： 570. 至少有五位直接下属的经理

    drop table if exists Employee;
    Create table If Not Exists Employee (Id int, Name varchar(255), Department varchar(255), ManagerId int);
    Truncate table Employee;
    insert into Employee (Id, Name, Department, ManagerId) values ('101', 'John', 'A', null);
    insert into Employee (Id, Name, Department, ManagerId) values ('102', 'Dan', 'A', '101');
    insert into Employee (Id, Name, Department, ManagerId) values ('103', 'James', 'A', '101');
    insert into Employee (Id, Name, Department, ManagerId) values ('104', 'Amy', 'A', '101');
    insert into Employee (Id, Name,