[lab-sql-2] João

Lab-Sql-2.sql

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+-- 1) Selecting all the actors with the first name ‘Scarlett’
+select *
+from sakila.actor
+where (first_name = "Scarlett");
+
+-- 2) Selecting all the actors with the last name ‘Johansson’
+select *
+from sakila.actor
+where (last_name = "Johansson");
+
+-- 3) How many films (movies) are available for rent?
+select count(*) as films_available_for_rent
+from sakila.inventory;
+
+-- 4) How many films have been rented?
+select count(*) number_of_rented_films
+from sakila.rental;
+
+-- 5) What is the shortest and longest rental period?
+select min(rental_duration) as shortest_rental_period
+from sakila.film;
+
+select max(rental_duration) as longest_rental_period
+from sakila.film;
+
+-- 6) What are the shortest and longest movie duration?
+select min(length) as min_duration
+from sakila.film;
+
+select max(length) as max_duration
+from sakila.film
+
+-- 7) What's the average movie duration?
+select avg(length) as average_movie_duration
+from sakila.film;
+
+-- 8) What's the average movie duration expressed in format (hours, minutes)?
+select concat(floor(avg(length)/60), " hour(s) and ", round(avg(length)%60), " minute(s)") as average_movie_duration
+from sakila.film;
+
+-- 9) How many movies longer than 3 hours?
+select count(*) as number_of_movies_longer_than_3_hours
+from sakila.film
+where (length > 180);
+
+-- 10) Getting the name and email formatted
+select concat(first_name, " ", last_name, " - ", lower(email)) as name_and_email
+from sakila.customer;
+
+-- 11) What's the length of the longest film title?
+select max(length(description)) as length_of_the_longest_film_title
+from sakila.film;