From 04536c801caef1e002618cb6df1ba48f18809df4 Mon Sep 17 00:00:00 2001
From: ctupac999 <cristiands9999@gmail.com>
Date: Tue, 3 Dec 2024 16:47:17 +0100
Subject: [PATCH] ok

---
 labsql4.sql | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 labsql4.sql

diff --git a/labsql4.sql b/labsql4.sql
new file mode 100644
index 0000000..399549e
--- /dev/null
+++ b/labsql4.sql
@@ -0,0 +1,59 @@
+-- 1. List the number of films per category.
+
+SELECT 
+    c.name AS category_name,
+    COUNT(f.film_id) AS total_films
+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;
+    
+-- 2. Retrieve the store ID, city, and country for each store.
+
+SELECT 
+    s.store_id,
+    c.city,
+    co.country
+FROM 
+    store s
+JOIN 
+    address a ON s.address_id = a.address_id
+JOIN 
+    city c ON a.city_id = c.city_id
+JOIN 
+    country co ON c.country_id = co.country_id;
+
+-- 3.  Calculate the total revenue generated by each store in dollars.
+
+SELECT 
+    s.store_id,
+    SUM(p.amount) AS total_revenue
+FROM 
+    store s
+JOIN 
+    inventory i ON s.store_id = i.store_id
+JOIN 
+    rental r ON i.inventory_id = r.inventory_id
+JOIN 
+    payment p ON r.rental_id = p.rental_id
+GROUP BY 
+    s.store_id;
+
+-- 4.  Determine the average running time of films for each category.
+
+SELECT 
+    c.name AS category_name,
+    AVG(f.length) 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;
+