text: INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Akira", "Rukawakaede", 1, null);
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Akagi", "Takenori", 2, "1");
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Miyagi", "Ryota", 3, "1");
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Toyota", "Lu", 4, "1");
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Honda", "Yo", 5, "1");
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Otani", "Brown", 6, null);
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Sarah", "Suzuki", 2, 6);
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Tom", "Allen", 5, "6");
  
  INSERT INTO employee (first_name, last_name, role_id, manager_id)
  VALUES ("Hanna", "Lauth", 3, "3");
  
  
  INSERT INTO department (department_name)
  VALUES ('Management');
  INSERT INTO department (department_name)
  VALUES ('Marketing');
  INSERT INTO department (department_name)
  VALUES ('Accounting');
  INSERT INTO department (department_name)
  VALUES ('Support');
  INSERT INTO department (department_name)
  VALUES ('Human Resources');
  
  INSERT INTO role (title, salary, department_id)
  VALUES ('General Manager', 120000, 1);
  INSERT INTO role (title, salary, department_id)
  VALUES ('Salesperson', 80000, 2);
  INSERT INTO role (title, salary, department_id)
  VALUES ('Accountant', 90000, 3);
  INSERT INTO role (title, salary, department_id)
  VALUES ('Assistance', 40000, 4);
  INSERT INTO role (title, salary, department_id)
  VALUES ('Human Resource Officer', 75000, 5);
  INSERT INTO role (title, salary, department_id)
  VALUES ('CTO', 250000, null);
  
  