diff --git a/sakila_basic_queries.sql b/sakila_basic_queries.sql new file mode 100644 index 0000000..7355b32 --- /dev/null +++ b/sakila_basic_queries.sql @@ -0,0 +1,62 @@ +-- Use the sakila database to do the following tasks: +USE sakila; + +-- 1. Display all available tables in the Sakila database. +SHOW FULL 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(*) FROM store; + +-- 5.2 Determine the number of employees that the company has. +SELECT COUNT(*) FROM staff; + +-- 5.3 Determine how many films are available for rent and how many have been rented. +SELECT COUNT(*) FROM film; + +-- 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 title 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 first_name, last_name FROM actor +WHERE first_name LIKE '%SCAR%'; + +-- BONUS: +-- 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes. +-- Hint: use LIKE operator. +SELECT title FROM film +WHERE title REGEXP 'ARMAGEDDON'; + +-- 7.3 Determine the number of films that include Behind the Scenes content +SELECT special_features, COUNT(*) +FROM film +GROUP BY special_features; + +SELECT COUNT(*) AS films_with_special_features +FROM film +WHERE special_features IS NOT NULL + AND special_features <> ''; \ No newline at end of file