diff --git a/sakila-queries.sql b/sakila-queries.sql new file mode 100644 index 0000000..1af7d48 --- /dev/null +++ b/sakila-queries.sql @@ -0,0 +1,72 @@ +-- Selecting the database that is going to be used +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 actor; + +SELECT * FROM film; + +SELECT * FROM customer; + +-- 3. Retrieve the following columns from their respective tables: + -- 3.1 Titles of all films from the film table +SELECT title +FROM film; + + -- 3.2 List of languages used in films, with the column aliased as language from the language table +SELECT name AS language +FROM language; + + -- 3.3 List of first names of all employees from the staff table +SELECT first_name +FROM staff; + +-- 4. Retrieve unique release years. +SELECT DISTINCT release_year +FROM film; + +-- 5. Counting records for database insights: + -- 5.1 Determine the number of stores that the company has. +SELECT COUNT(*) AS number_of_stores +FROM store; + + -- 5.2 Determine the number of employees that the company has. +SELECT COUNT(*) AS number_of_employees +FROM staff; + + -- 5.3 Determine how many films are available for rent and how many have been rented. +SELECT COUNT(DISTINCT film_id) +FROM inventory; + +SELECT COUNT(DISTINCT inventory_id) +FROM rental; + + -- 5.4 Determine the number of distinct last names of the actors in the database. +SELECT COUNT(DISTINCT last_name) +FROM actor; + +-- 6. Retrieve the 10 longest films. +SELECT * +FROM 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 actor +WHERE first_name = 'scarlett' + + -- 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes. + -- Hint: use LIKE operator. More information here. +SELECT * +FROM film +WHERE length > 100 AND title LIKE '%armageddon%' + + -- 7.3 Determine the number of films that include Behind the Scenes content +SELECT * +FROM film +WHERE special_features LIKE '%behind the scenes%'