Sakila is a sample database provided by MySQL, meant to be used in tests and documentation examples. This page lists some example queries against that database.
Get a non-normalized selection of actors and films in which they played:
SELECT actor.first_name,
actor.last_name,
film.title
FROM actor, film, film_actor
WHERE film_actor.actor_id = actor.actor_id
AND film_actor.film_id = film.film_id;
Get the same result with double INNER JOIN
:
SELECT actor.first_name, actor.last_name, film.title
FROM film_actor
INNER JOIN actor ON film_actor.actor_id = actor.actor_id
INNER JOIN film ON film_actor.film_id = film.film_id;