[lab-sql-2] Mickael Jossier

Lab_SQL_Queries 2.sql

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+-- selecting first_name as scarlett in all actor list 
+
+select *
+from sakila.actor
+where first_name = 'Scarlett';
+
+-- selecting last_name as ‘Johansson’ in all actor list 
+select *
+from sakila.actor
+where last_name = 'Johansson';
+
+-- check how many film are available for rent 
+
+select *
+from sakila.film, inventory
+;
+
+select count(film_id)
+from sakila.inventory ;
+
+-- 4581 film are available to be renteed 
+
+-- Now checking how many film have been rented 
+-- 16044 film have been rented 
+
+select count(rental_id)
+from sakila.rental;
+
+-- What is the shortest and longest rental period?
+-- max rental period is 7 days
+-- min rental periodo is 3 days 
+
+select min(rental_duration)
+from sakila.rental,film;
+
+select max(rental_duration)
+from sakila.rental,film;
+
+-- What are the shortest and longest movie duration? Name the values max_duration and min_duration.
+-- min_duration = 46 \ max_duration = 185
+
+select min(length) as min_duration
+from sakila.rental,film;
+
+select max(length) as max_duration
+from sakila.rental,film;
+
+select length
+from sakila.rental,film;
+
+-- What's the average movie duration?
+-- average duration is 115.2720
+select avg(length) as avg_duration
+from sakila.rental,film;
+
+-- What's the average movie duration expressed in format (hours, minutes)? format is minutes
+
+-- How many movies longer than 3 hours?
+-- 625716 film are more longer than 3 hours 
+select count('rental_id')
+from sakila.rental,film
+WHERE length > 180 ;
+
+select *
+from sakila.rental,film
+WHERE length > 180 ;
+
+-- Get the name and email formatted. Example: Mary SMITH - mary.smith@sakilacustomer.org.
+
+select lower(first_name)
+from sakila.customer 
+
+select lower(email)
+from sakila.customer;
+
+SELECT last_name, lower(first_name),lower(email)
+FROM sakila.customer;
+
+-- What's the length of the longest film title?
+-- the length of the longest film title is 27 caracter
+select *
+from film, sakila.rental;
+
+select length(title)
+from sakila.film
+
+select max(length(title))
+from sakila.film
+