Solved lab

lab_3_subqueries.sql

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+-- SQL Subqueries
+-- Dataset: Sakila database
+-- Author: Bryan Calderon
+
+USE sakila;
+-- 1. Number of copies of "Hunchback Impossible" in inventory
+SELECT * FROM inventory;
+SELECT COUNT(*) AS number_of_copies
+FROM inventory
+WHERE film_id = (SELECT film_id FROM film
+    WHERE title = 'Hunchback Impossible');
+
+-- 2. Films longer than the average film length
+SELECT title, length FROM film
+WHERE length > (SELECT AVG(length) FROM film)
+ORDER BY length DESC;
+
+-- 3. Actors who appear in "Alone Trip"
+SELECT first_name, last_name
+FROM actor
+WHERE actor_id IN (SELECT actor_id FROM film_actor
+    WHERE film_id = (SELECT film_id FROM film
+        WHERE title = 'Alone Trip'));
+
+-- BONUS 1. Task 4 Sales have been lagging among young families.
+SELECT title
+FROM film
+WHERE film_id IN (
+    SELECT film_id
+    FROM film_category
+    WHERE category_id = (
+        SELECT category_id
+        FROM category
+        WHERE name = 'Family'))
+ORDER BY title;
+
+## THe other Bonus for the next time haha!