diff --git a/[lab-sql-self-cross-join]Giuliana.sql b/[lab-sql-self-cross-join]Giuliana.sql new file mode 100644 index 0000000..a141018 --- /dev/null +++ b/[lab-sql-self-cross-join]Giuliana.sql @@ -0,0 +1,30 @@ +-- Get all pairs of actors that worked together. +select f1.actor_id as Actor_1, f2.actor_id as Actor_2, f1.film_id +from sakila.film_actor f1 +inner join sakila.film_actor f2 +on f1.film_id = f2.film_id +and f2.actor_id <> f1.actor_id +order by f1.film_id; + +-- Get all pairs of customers that have rented the same film more than 3 times. +select distinct c.customer_id as Customer_1, c2.customer_id as Customer_2, count(*) as same_films +from sakila.customer c +inner join sakila.rental r +on c.customer_id = r.customer_id +inner join sakila.inventory i +on r.inventory_id = i.inventory_id +inner join sakila.inventory i2 +on i.film_id = i2.film_id +inner join sakila.rental r2 +on r2.inventory_id = i2.inventory_id +inner join sakila.customer c2 +on c2.customer_id = r2.customer_id +and c.customer_id <> c2.customer_id +group by 1,2 +having same_films > 3 +order by same_films desc; + + +-- Get all possible pairs of actors and films +select concat(first_name, ' ', last_name) as actor_full_name, title as film_title from sakila.actor +cross join sakila.film; \ No newline at end of file