diff --git a/LAB SQL JOIN.sql b/LAB SQL JOIN.sql
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+-- CHALLENGE
+USE sakila;
+
+-- Numero de pelis por categoria
+SELECT 
+    c.name AS category,
+    COUNT(fc.film_id) AS number_of_films
+FROM category c
+JOIN film_category fc ON c.category_id = fc.category_id
+GROUP BY c.name;
+
+
+-- store id, ciudad y pais de cada tienda
+SELECT 
+    s.store_id,
+    ci.city,
+    co.country
+FROM store s
+JOIN address a ON s.address_id = a.address_id
+JOIN city ci ON a.city_id = ci.city_id
+JOIN country co ON ci.country_id = co.country_id;
+
+-- Ingresos total por tienda
+SELECT 
+    s.store_id,
+    SUM(p.amount) AS total_revenue
+FROM store s
+JOIN staff st ON s.store_id = st.store_id
+JOIN payment p ON st.staff_id = p.staff_id
+GROUP BY s.store_id;
+
+-- Duracion promedio de las peliculas por categoria 
+SELECT 
+    c.name AS category,
+    ROUND(AVG(f.length), 2) AS average_running_time
+FROM category c
+JOIN film_category fc ON c.category_id = fc.category_id
+JOIN film f ON fc.film_id = f.film_id
+GROUP BY c.name;
+
+-- BONUS
+-- Pelis con la mayor duracion promedio por categoria 
+SELECT 
+    c.name AS category,
+    ROUND(AVG(f.length), 2) AS avg_running_time
+FROM category c
+JOIN film_category fc ON c.category_id = fc.category_id
+JOIN film f ON fc.film_id = f.film_id
+GROUP BY c.name
+ORDER BY avg_running_time DESC;
+
+-- Top 10 peliculas mas alquiladas
+
+SELECT 
+    f.title,
+    COUNT(r.rental_id) AS total_rentals
+FROM film f
+JOIN inventory i ON f.film_id = i.film_id
+JOIN rental r ON i.inventory_id = r.inventory_id
+GROUP BY f.title
+ORDER BY total_rentals DESC
+LIMIT 10;