Question

person_id | manager_id | name |
          |            |      |
-------------------------------

I have to display name of every person with manager name.

Yes its complete table. Thats all I have.

Answer 1

This one should give you all employees that have a manager, with employee_name and manager_name. Replace your_table by your table name.

If you want to get all persons, also that without manager, replace the JOIN by a LEFT JOIN. This would return NULL as manager_name for all persons without manager_id.

SELECT t1.name employee_name, t2.name manager_name
FROM [your_table] t1
JOIN [your_table] t2 ON ( t1.manager_id = t2.person_id )