tópico
Ideias para resolução de problemas:
Método 1: Auto-conexão
select e.Name 'Employee'
from Employee e,Employee e1
where e.managerId = e1.Id and e.salary > e1.salary;
Método dois: conexão esquerda
select e.Name as Employee
from Employee e
left join Employee e1
on e.ManagerId = e1.Id
where e.Salary > e1.Salary;