#The following data definition defines an organization's employee hierarchy.

#An employee is a manager if any other employee has their managerId set to the first employees id. An employee who is a manager may or may not also have a manager.

#TABLE employees
#  id INTEGER NOT NULL PRIMARY KEY
#  managerId INTEGER REFERENCES employees(id)
#  name VARCHAR(30) NOT NULL
#Write a query that selects the names of employees who are not managers.
###############################################################################


#Answer

SELECT name AS [Employess not managers] FROM employees
	WHERE managerId is NOT NULL