diff --git a/lab-sql-basic-queries.sql b/lab-sql-basic-queries.sql new file mode 100644 index 0000000..29afb74 --- /dev/null +++ b/lab-sql-basic-queries.sql @@ -0,0 +1,89 @@ +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 +-- 3.2 List of languages used in films, with the column aliased as language from the language table +-- 3.3 List of first names of all employees from the staff table +SELECT title +FROM film; + +SELECT name AS language +FROM language; + +SELECT first_name +FROM staff; + +-- 4.Retrieve unique release years. + +SELECT DISTINCT release_year +FROM film; + +-- SELECT * FROM sakila.film + + +-- 5.Counting records for database insights: +-- 5.1 Determine the number of stores that the company has. +-- 5.2 Determine the number of employees that the company has. +-- 5.3 Determine how many films are available for rent and how many have been rented. +-- 5.4 Determine the number of distinct last names of the actors in the database. + + +SELECT COUNT(store_id) AS total_stores +FROM store; + +SELECT COUNT(staff_id) AS total_employees +FROM staff; +-- SELECT * FROM sakila.staff + +-- Total films in inventory +SELECT COUNT(inventory_id) AS total_inventory_items +FROM inventory; + +-- Total number of rental transactions ever made +SELECT COUNT(rental_id) AS total_rentals_item +FROM rental; + + + SELECT COUNT(DISTINCT last_name) AS unique_last_names +FROM actor; + +-- 6.Retrieve the 10 longest films. + +SELECT title, length +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'; + +-- BONUS: + +-- 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. +-- 7.3 Determine the number of films that include Behind the Scenes content + +SELECT title, length +FROM film +WHERE title LIKE '%ARMAGEDDON%' + AND length > 100; + + SELECT COUNT(*) AS films_with_behind_the_scenes +FROM film +WHERE special_features LIKE '%Behind the Scenes%'; + + + +