lab solved

lab solved.sql

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+use sakila;
+
+select count(film_id), name
+from film 
+inner join film_category
+using (film_id)
+inner join category
+using (category_id)
+group by name;
+
+select store_id, city, country
+from store
+inner join address
+using(address_id)
+inner join city
+using(city_id)
+inner join country
+using(country_id);
+
+select sum(amount), store_id
+from store
+inner join staff
+using(store_id)
+inner join payment
+using(staff_id)
+group by store_id;
+
+select avg(length), name
+from film
+inner join film_category
+using(film_id)
+inner join category
+using(category_id)
+group by name
+order by avg(length) desc;
+
+select count(rental_date), title
+from film
+inner join inventory
+using (film_id)
+inner join rental
+using(inventory_id)
+group by title
+order by count(rental_date) desc
+limit 10;
+limit 5;
+
+select store_id, title
+from film
+inner join inventory
+using(film_id)
+where title="ACADEMY DINOSAUR" and store_id=1;
+
+select title,
+