From 8dfb9504371850fda3aa9249a79272fa83e9c2e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Gon=C3=A7alo?= <gonch145@gmail.com>
Date: Sun, 15 Mar 2026 14:46:51 +0100
Subject: [PATCH] Solved lab

---
 SQL_lab.sql | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 SQL_lab.sql

diff --git a/SQL_lab.sql b/SQL_lab.sql
new file mode 100644
index 0000000..6e58ee0
--- /dev/null
+++ b/SQL_lab.sql
@@ -0,0 +1,69 @@
+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
+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
+SELECT first_name
+FROM staff;
+
+-- 4. Retrieve unique release years
+SELECT DISTINCT release_year
+FROM film;
+
+-- 5. Counting records
+-- 5.1 Number of stores
+SELECT COUNT(*) AS number_of_stores
+FROM store;
+
+-- 5.2 Number of employees
+SELECT COUNT(*) AS number_of_employees
+FROM staff;
+
+-- 5.3 How many films are available for rent and how many have been rented
+SELECT COUNT(DISTINCT inventory_id) AS films_available_for_rent
+FROM inventory;
+
+SELECT COUNT(DISTINCT inventory_id) AS films_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
+-- 7.1 All actors with the first name 'SCARLETT'
+SELECT *
+FROM actor
+WHERE first_name = 'SCARLETT';
+
+-- 7.2 BONUS: Movies with ARMAGEDDON in the title and duration longer than 100 minutes
+SELECT *
+FROM film
+WHERE title LIKE '%ARMAGEDDON%'
+  AND length > 100;
+
+-- 7.3 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