diff --git a/.DS_Store b/.DS_Store new file mode 100644 index 0000000..a936635 Binary files /dev/null and b/.DS_Store differ diff --git a/LAB | SQL Basic Queries.sql b/LAB | SQL Basic Queries.sql new file mode 100644 index 0000000..3648c9c --- /dev/null +++ b/LAB | SQL Basic Queries.sql @@ -0,0 +1,75 @@ +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 +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) AS films_available_for_rent +FROM inventory; + +SELECT COUNT(DISTINCT inventory.film_id) AS films_rented +FROM rental +JOIN inventory +ON rental.inventory_id = inventory.inventory_id; + +-- 5.4 Determine the number of distinct last names of the actors in the database +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. Use filtering techniques + +-- 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 +SELECT * +FROM film +WHERE title LIKE '%ARMAGEDDON%' + AND length > 100; + +-- 7.3 Determine the number of films that include Behind the Scenes content +SELECT COUNT(*) AS films_with_behind_the_scenes +FROM film +WHERE special_features LIKE '%Behind the Scenes%'; \ No newline at end of file