join with same table in mysql?

Question

Im having the following table , each employee have a manager, if a guy is his own manager den the managerid field is null, i want emid name and manager id as result

Answer 1

select
      e1.emid,
      e1.name,
      COALESCE(e2.name, e1.name ) ManagerName
   from 
      employees e1
         left join employees e2
            on e1.managerid = e2.emid