text: const viewRole = `SELECT role.id, role.title, role.salary, department.name
                  AS department_name
                  FROM role
                  LEFT JOIN department
                  ON role.department_id = department.id`;
  
  const roles = `SELECT * FROM role`;
  
  const addRole = `INSERT INTO role (title, salary, department_id) VALUES (?, ?, ?)`;
  
  const deleteRole = `DELETE FROM role WHERE id = ?`;
  
  module.exports = [ viewRole, roles, addRole, deleteRole ];