//1 select customer.first_name from customer join rental on customer.customer_id=rental.customer_id where customer.customer_id=rental.customer_id; //2 select customer.first_name,film.title from customer join rental on customer.customer_id=rental.customer_id join payment on payment.rental_id=rental.rental_id join inventory on rental.inventory_id=inventory.inventory_id join film on inventory.film_id=film.film_id where customer.customer_id=rental.customer_id and rental.rental_id=payment.rental_id and rental.return_date