diff --git a/salika_lab.sql b/salika_lab.sql new file mode 100644 index 0000000..5f6492d --- /dev/null +++ b/salika_lab.sql @@ -0,0 +1,62 @@ +-- --------------------------------------------------- +-- Lab: SQL Basic Queries (using Sakila database) +-- --------------------------------------------------- + +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 specific columns +-- 3.1 Titles of all films from the film table +SELECT title FROM film; + +-- 3.2 List of languages used in films, aliased as 'language' +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 Number of stores +SELECT COUNT(*) AS total_stores FROM store; + +-- 5.2 Number of employees +SELECT COUNT(*) AS total_employees FROM staff; + +-- 5.3 Number of films available for rent and how many have been rented +SELECT COUNT(*) AS total_inventory FROM inventory; +SELECT COUNT(DISTINCT inventory_id) AS total_rented FROM rental; + +-- 5.4 Number of distinct actor last names +SELECT COUNT(DISTINCT last_name) AS distinct_actor_last_names FROM actor; + +-- 6. Retrieve the 10 longest films +SELECT title, length +FROM film +ORDER BY length DESC +LIMIT 10; + +-- 7. Filtering techniques +-- 7.1 Retrieve all actors with the first name "SCARLETT" +SELECT * FROM actor WHERE first_name = 'SCARLETT'; + +-- BONUS 7.2 Retrieve all movies that have ARMAGEDDON in their title and duration > 100 min +SELECT film_id, title, length +FROM film +WHERE title LIKE '%ARMAGEDDON%' AND length > 100; + +-- BONUS 7.3 Determine the number of films that include Behind the Scenes content +SELECT COUNT(*) AS films_with_bts +FROM film +WHERE special_features LIKE '%Behind the Scenes%'; + +