lab completed

LABSSQLaggandtrans.sql

@@ -0,0 +1,65 @@
+USE sakila;
+
+SELECT * FROM film;
+SELECT 
+    MIN(length) AS min_duration,
+    MAX(length) AS max_duration
+FROM film;
+
+SELECT 
+    FLOOR(AVG(length) / 60) AS avg_hours,
+    FLOOR(MOD(AVG(length), 60)) AS avg_minutes
+FROM film;
+
+SELECT * FROM rental;
+
+SELECT DATEDIFF
+(MAX(rental_date),
+MIN(rental_date)) AS operating_days
+FROM rental;
+
+SELECT * FROM rental;
+SELECT *, 
+       MONTH(rental_date) AS rental_month, 
+       DAYNAME(rental_date) AS rental_weekday
+FROM rental
+LIMIT 20;
+
+SELECT * FROM rental;
+SELECT *, 
+       CASE 
+		WHEN DAYNAME(rental_date) IN ('Saturday', 'Sunday') 
+		THEN 'weekend'
+		ELSE 'workday'
+        END AS DAY_TYPE
+FROM rental;
+
+SELECT * FROM film;
+
+SELECT title, IFNULL(rental_duration, 'Not Available') AS rental_duration
+	FROM film
+	ORDER By title ASC;
+
+
+SELECT * FROM film;
+
+SELECT COUNT(DISTINCT title) AS distinct_film
+FROM film;
+
+SELECT rating, COUNT(rating) AS film_count
+    FROM film
+    GROUP BY rating
+    ORDER BY film_count DESC;
+
+    SELECT * FROM film;
+
+    SELECT rating, ROUND(AVG(length), 2) AS avg_length
+    FROM film
+    GROUP BY rating 
+    ORDER BY avg_length DESC;
+
+    SELECT rating, ROUND(AVG(length), 2) AS avg_length
+    FROM film
+    GROUP BY rating 
+    HAVING AVG(length) > 120
+    ORDER BY avg_length DESC;