From 5e0d8174fdda41f46678e2e3468c456ce44aeb0c Mon Sep 17 00:00:00 2001 From: Zidene Aourdahe Date: Tue, 19 May 2026 23:36:55 +0200 Subject: [PATCH] Solved lab --- my_sql_lab_w3_d2.sql | 46 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 my_sql_lab_w3_d2.sql diff --git a/my_sql_lab_w3_d2.sql b/my_sql_lab_w3_d2.sql new file mode 100644 index 0000000..071322d --- /dev/null +++ b/my_sql_lab_w3_d2.sql @@ -0,0 +1,46 @@ +-- 1. Display all available tables in the Sakila database. +USE sakila; +SHOW tables; +-- 2. Retrieve all the data from the tables actor, film and customer. +SELECT * FROM sakila.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 * FROM language; +SELECT name AS language FROM language; +-- 3.3 List of first names of all employees from the staff table +SELECT * FROM staff; +SELECT first_name FROM staff; +-- 4. Retrieve unique release years. +SELECT DISTINCT film.release_year FROM film; +-- 5. Counting records for database insights: +-- 5.1 Determine the number of stores that the company has. +SELECT * FROM store; +SELECT DISTINCT COUNT(*) FROM store; +-- 5.2 Determine the number of employees that the company has. +SELECT COUNT(staff_id) FROM staff; +-- 5.3 Determine how many films are available for rent and how many have been rented +SELECT * FROM rental; +SELECT COUNT(film_id) FROM film; +SELECT COUNT(rental_id) FROM rental +WHERE return_date IS NULL; +-- 5.4 Determine the number of distinct last names of the actors in the database. +SELECT DISTINCT COUNT(last_name) FROM actor; +-- 6. Retrieve the 10 longest films. +SELECT film_id, 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 first_name, last_name 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 title, length FROM film +WHERE title LIKE '%ARMAGEDDON' AND length > 100; +-- 7.3 Determine the number of films that include Behind the Scenes content +SELECT COUNT(film_id) AS Behind_scene_number FROM film +WHERE special_features LIKE '%Behind the Scenes%'; +