[lab-sql-2] Montaseer Alam

lab-sql-2.sql

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+USE Sakila;
+
+-- 1. Select all the actors with the first name ‘Scarlett’
+SELECT * FROM actor WHERE first_name='Scarlett';
+
+-- 2. Select all the actors with the last name ‘Johansson’.
+SELECT * FROM actor WHERE last_name='Johansson';
+
+-- 3. How many films (movies) are available for rent?
+SELECT * FROM film;
+
+-- 4. How many films have been rented? 
+SELECT * FROM rental;
+
+-- 5. What is the shortest and longest rental period?
+SELECT *, DATEDIFF(return_date, rental_date) AS rental_duration FROM rental ORDER BY rental_duration ASC LIMIT 1; 
+SELECT *, DATEDIFF(return_date, rental_date) AS rental_duration FROM rental ORDER BY rental_duration DESC LIMIT 1;
+
+-- 6. What are the shortest and longest movie duration? Name the values max_duration and min_duration
+SELECT MAX(length) AS max_duration FROM film;
+SELECT MIN(length) AS min_duration FROM film;
+
+-- 7. What's the average movie duration?
+SELECT AVG(length) AS avg_duration FROM film;
+
+-- 8. What's the average movie duration expressed in format (hours, minutes)?
+SELECT 
+	CONCAT(
+		FLOOR(AVG(length)/60), 'hr ', 
+        FLOOR(AVG(length)%60), 'm'
+	) AS avg_duration FROM film;
+
+-- 9. How many movies longer than 3 hours?
+SELECT * FROM film WHERE length > 180;
+
+-- 10. Get the name and email formatted. Example: Mary SMITH - mary.smith@sakilacustomer.org.
+SELECT CONCAT(first_name, ' ', last_name,  ' - ', email, '.') AS customer_details FROM customer;
+
+-- 11. What's the length of the longest film title?
+SELECT * FROM film WHERE CHAR_LENGTH(title) = (SELECT MAX(CHAR_LENGTH(title)) FROM film);