[lab-sql-2]Giuliana

[lab-sql-2]Giuliana.sql

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+-- Select all the actors with the first name ‘Scarlett’
+select * 
+from sakila.actor
+where first_name = 'Scarlett'; 
+
+-- Select all the actors with the last name ‘Johansson’
+
+select * 
+from sakila.actor
+where last_name = 'Johansson'; 
+
+-- How many films (movies) are available for rent? 4.581
+select count(inventory_id)
+from sakila.inventory;
+
+-- How many films have been rented?
+
+select count(*) as films_rented 
+from sakila.rental
+where rental_id;
+
+-- What is the shortest and longest rental period? 18 hours
+select min(TIMEDIFF(return_date, rental_date)) as rental_period
+from sakila.rental 
+;
+-- largest: 10 days
+select max(DATEDIFF(return_date, rental_date)) as rental_period
+from sakila.rental;
+
+-- What are the shortest and longest movie duration? Name the values max_duration and min_duration
+--  Max : 185 min
+select max(length) as max_duration
+from sakila.film; 
+-- Min: 46 min
+select min(length) as min_duration
+from sakila.film;
+
+-- What's the average movie duration? 115,2 min
+select avg(length) as average_duration
+from sakila.film;
+
+-- What's the average movie duration expressed in format (hours, minutes)?
+select time_format(sec_to_time(avg(length * 60)), '%H:%i:%s') as average_length
+FROM sakila.film;
+
+-- How many movies longer than 3 hours? 39 movies
+select count(title) as long_movies
+from sakila.film
+where length > 180;
+
+-- Get the name and email formatted
+
+select lower(email)
+from sakila.customer;
+
+SELECT CONCAT(UPPER(SUBSTRING(first_name, 1, 1)), LOWER(SUBSTRING(first_name, 2)), " ", 
+upper(last_name), " - ", lower(email)) as formated
+FROM sakila.customer;
+
+-- What's the length of the longest film title? 
+#  27 characters 
+select max(character_length(title)) as max_len_of_title
+from sakila.film;