Add files via upload

lab3.sql

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+USE sakila;
+
+SELECT 
+MAX(length) as max_duration,
+MIN(length) as min_duration,
+round(avg(length),0) 
+FROM film;
+
+
+select
+
+datediff(max(rental_date),min(rental_date))
+
+from rental;
+
+
+select 
+MONTHNAME(rental_date),
+DAYNAME(rental_date)
+from rental;
+
+select 
+title,
+
+ifnull(rental_duration,'not available') as rental_duration
+
+
+from film;
+
+
+
+select 
+count(title),
+rating
+
+from film
+group by
+rating
+order by count(title)desc;
+
+
+SELECT
+    rating,
+    ROUND(AVG(length), 2) AS mean_duration
+FROM film
+GROUP BY rating
+HAVING AVG(length) > 120
+ORDER BY mean_duration DESC;