Added join mutliple tables file

solutions.sql

@@ -1 +1,75 @@
--- Add you solution queries below:
+-- QUERY 1: Write a query to display for each store its store ID, city, and country.
+
+SELECT s.store_id, ci.city, co.country 
+FROM store AS s
+JOIN address AS ad ON s.address_id = ad.address_id
+JOIN city AS ci ON ad.city_id = ci.city_id
+JOIN country AS co ON ci.country_id = co.country_id;
+
+
+-- QUERY 2. Write a query to display how much business, in dollars, each store brought in.
+SELECT s.store_id, SUM(p.amount) AS total_sales
+FROM store AS s
+JOIN inventory AS i ON s.store_id = i.store_id
+JOIN rental AS r ON i.inventory_id = r.inventory_id
+JOIN payment AS p ON r.rental_id = p.rental_id
+GROUP BY s.store_id;
+
+-- QUERY 3. What is the average running time of films by category?
+SELECT category, avg(length) AS avg_running_time
+FROM film_list
+GROUP BY category;
+
+select c.name as category, avg(f.length) as running_time
+from film as f
+join film_category as fc on f.film_id = fc.film_id
+join category as c on fc.category_id = c.category_id
+group by c.name
+
+-- QUERY 4. Which film categories are longest?
+
+select 
+	c.`name` as category,
+	avg(f.length) as average_running_time
+from film f
+left join film_category fc on fc.film_id = f.film_id
+left join category c on fc.category_id = c.category_id
+group by category
+order by average_running_time desc
+limit 1;
+
+-- QUERY 5. Display the most frequently rented movies in descending order.
+select 
+	f.film_id,
+	count(r.rental_id) as rented_times
+from film f
+left join inventory i on i.film_id = f.film_id
+left join rental r on r.inventory_id = i.inventory_id
+group by f.film_id
+order by rented_times desc;
+
+-- QUERY 6. List the top five genres in gross revenue in descending order.
+
+select
+	c.`name` as category,
+    sum(p.amount) as gross_revenue
+from payment p
+left join rental r on r.rental_id = p.rental_id
+left join inventory i on i.inventory_id = r.inventory_id
+left join film f on i.film_id = f.film_id
+left join film_category fc on fc.film_id = f.film_id
+left join category c on fc.category_id = c.category_id
+group by category
+order by gross_revenue desc
+limit 5;
+
+-- QUERY 7. Is "Academy Dinosaur" available for rent from Store 1?
+select 
+	s.store_id,
+    f.title
+from store s
+left join payment p on p.staff_id = s.manager_staff_id
+left join rental r on r.rental_id = p.rental_id
+left join inventory i on i.inventory_id = r.inventory_id
+left join film f on f.film_id = i.film_id
+where s.store_id = 1 and f.title='Academy Dinosaur' ;