text: 
  
  
  
  INSERT INTO department (name)
  VALUES ("Management"),
         ("Sales"),
         ("Accounting"),
         ("Warehouse");
  
  
  INSERT INTO roles (title, salary, department_id)
  VALUES ("Manager", 80000.99, 1),
         ("Sales Lead", 50000.99, 2),
         ("Senior Accountant", 60000.99, 3),
         ("Supervisor", 45000.99, 4);
  
  
  INSERT INTO employees (first_name, last_name, roles_id, manager_id)
  VALUES ("Michael", "Scott", 1, 1),
         ("Dwight", "Schrute", 2, NULL),
         ("Kevin", "Malone", 3, NULL),
         ("Darryl", "Philbin", 4, NULL);