diff --git a/lab-sql-basic-queries.sql b/lab-sql-basic-queries.sql new file mode 100644 index 0000000..16c60fe --- /dev/null +++ b/lab-sql-basic-queries.sql @@ -0,0 +1,70 @@ +USE sakila; +SHOW TABLES; + +SELECT * +FROM actor; + +SELECT * +FROM film; + +SELECT * +FROM customer; + +-- 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 +ORDER BY release_year; + +-- Counting records for database insights: +-- 5.1 Determine the number of stores that the company has. +SELECT COUNT(DISTINCT store_id) +FROM store; + +-- 5.2 Determine the number of employees that the company has. +SELECT COUNT(DISTINCT staff_id) +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 film_id, title, length +FROM film +ORDER BY length DESC +LIMIT 10; + +-- Use filtering techniques in order to: +-- 7.1 Retrieve all actors with the first name "SCARLETT". +SELECT actor_id, first_name +FROM 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 film_id, title +FROM film +WHERE title like '%ARMAGEDDON%' AND length > 100 ; + +-- Hint: use LIKE operator. More information here. +-- 7.3 Determine the number of films that include Behind the Scenes content +SELECT COUNT(film_id) +FROM film +WHERE special_features like '%Behind the Scenes%';