Solved Lab

SQL Sub queires Completed.sql

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+use sakila;
+
+SELECT f.title, COUNT(i.inventory_id) AS number_of_copies
+FROM film f
+JOIN inventory i ON f.film_id = i.film_id
+WHERE f.title = 'Hunchback Impossible'
+GROUP BY f.title;
+
+SELECT title, length
+FROM film
+WHERE length > (
+    SELECT AVG(length)
+    FROM film
+)
+ORDER BY length DESC;
+
+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'
+    )
+);
+