Solutions for Lab

LAB_JOINS.sql

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+USE sakila; 
+
+SELECT c.name AS 'Category', COUNT(distinct(fc.film_id)) AS 'Number_of_films' FROM sakila.category AS c
+JOIN sakila.film_category AS fc
+ON c.category_id = fc.category_id
+GROUP BY c.name;
+
+SELECT s.store_id, c.city, co.country FROM sakila.store AS s
+JOIN sakila.address AS a
+ON s.address_id = a.address_id
+JOIN sakila.city AS c 
+ON c.city_id = a.city_id
+JOIN sakila.country AS co
+ON co.country_id = c.country_id;
+
+
+SELECT s.store_id, CONCAT('$', SUM(p.amount)) AS 'Revenue' FROM sakila.payment AS p 
+JOIN sakila.rental AS r 
+ON p.rental_id = r.rental_id
+JOIN  sakila.inventory AS i 
+ON i.inventory_id = r.inventory_id
+JOIN sakila.store AS s 
+ON s.store_id = i.store_id
+GROUP BY s.store_id, 'Revenue';
+
+
+SELECT c.name AS 'Category', ROUND(AVG(f.length),2) AS 'Average Duration' FROM sakila.category AS c
+JOIN sakila.film_category AS fc
+ON c.category_id = fc.category_id
+JOIN sakila.film AS f
+ON f.film_id = fc.film_id
+GROUP BY c.name;
+
+
+#BONUS 
+
+SELECT c.name AS 'Category', ROUND(AVG(f.length),2) AS 'Average Duration' FROM sakila.category AS c
+JOIN sakila.film_category AS fc
+ON c.category_id = fc.category_id
+JOIN sakila.film AS f
+ON f.film_id = fc.film_id
+GROUP BY c.name
+ORDER BY ROUND(AVG(f.length),2) DESC;
+
+SELECT f.title, COUNT(distinct(r.rental_id)) AS 'rental_frequency' FROM sakila.rental AS r
+JOIN sakila.inventory AS i 
+ON r.inventory_id = i.inventory_id
+JOIN sakila.film AS f 
+ON f.film_id = i.film_id
+GROUP BY f.title
+ORDER BY COUNT(distinct(r.rental_id)) DESC
+LIMIT 10;
+
+SELECT film.film_id, film.title, store.store_id, inventory.inventory_id
+FROM inventory
+JOIN store USING (store_id)
+JOIN film USING (film_id)
+WHERE film.title = 'Academy Dinosaur'
+AND store.store_id = 1;
+
+
+SELECT DISTINCT f.title,
+CASE
+    WHEN i.film_id IS NULL THEN 'Not Available'
+    ELSE 'Available'
+END AS Availability
+FROM sakila.inventory AS i
+RIGHT JOIN sakila.film AS f
+ON i.film_id = f.film_id;