text: create table IF NOT EXISTS USER_TASKS(
  	id serial primary key,
  	user_id INT not null,
  	task_id INT not null,
  	CONSTRAINT userid_in_user_tasks_constraint
        FOREIGN KEY(user_id)
  	  REFERENCES users(user_id),
    	CONSTRAINT task_id_in_user_tasks_constraint
        FOREIGN KEY(task_id)
  	  REFERENCES tasks(id)
  );