lab-sql-basic-queries.sql

USE sakila;

-- 1. Display all available tables in the Sakila database.

SHOW TABLES;

-- 2. Retrieve all the data from the tables actor, film and customer.

SELECT * FROM sakila.actor;
SELECT * FROM sakila.film;
SELECT * FROM sakila.customer;

-- 3. Retrieve the following columns from their respective tables:
-- 3.1 Titles of all films from the film table
SELECT title FROM sakila.film;

-- 3.2 List of languages used in films, with the column aliased as language from the language table
SELECT name AS 'language' FROM sakila.language;

-- 3.3 List of first names of all employees from the staff table
SELECT first_name FROM sakila.staff;

-- 4. Retrieve unique release years.
SELECT DISTINCT release_year FROM sakila.film;

-- 5. Counting records for database insights:
-- 5.1 Determine the number of stores that the company has.
SELECT COUNT(store_id) FROM sakila.store;

-- 5.2 Determine the number of employees that the company has.
SELECT COUNT(staff_id) FROM sakila.staff;

-- 5.3 Determine how many films are available for rent and how many have been rented.
SELECT COUNT(*) AS films_available_for_rent FROM sakila.inventory;
SELECT COUNT(DISTINCT inventory_id) AS films_rented FROM sakila.rental;

-- 5.4 Determine the number of distinct last names of the actors in the database.
SELECT COUNT(DISTINCT last_name) FROM sakila.actor;

-- 6. Retrieve the 10 longest films.
SELECT * FROM sakila.film
ORDER BY length DESC
LIMIT 10;

-- 7. Use filtering techniques in order to:
-- 7.1 Retrieve all actors with the first name "SCARLETT".
SELECT * FROM sakila.actor
WHERE first_name='SCARLETT';

-- BONUS:
-- 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes.
SELECT * FROM sakila.film
WHERE title LIKE '%ARMAGEDDON%' AND length > 100;

-- 7.3 Determine the number of films that include Behind the Scenes content
SELECT * FROM sakila.film
WHERE special_features LIKE '%Behind the Scenes%';