Solved lab

lab-sql-basic-queries.sql

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+USE sakila;
+
+-- answer to 1
+SHOW TABLES;
+
+-- answer to 2
+SELECT * FROM sakila.actor;
+SELECT * FROM sakila.film;
+SELECT * FROM sakila.customer;
+
+-- answer to 3.1
+SELECT title
+FROM sakila.film;
+
+-- answer to 3.2
+SELECT `name` as `language`
+FROM `language`;
+
+-- answer to 3.3
+SELECT first_name FROM staff;
+
+-- answer to 4
+SELECT DISTINCT release_year FROM film;
+
+-- answer to 5.1
+SELECT count(store_id) FROM store;
+
+-- answer to 5.2
+SELECT count(staff_id) FROM staff;
+
+-- answer to 5.3
+SELECT count(rental_id)
+FROM rental
+WHERE return_date IS NULL;
+
+SELECT count(rental_id)
+FROM rental
+WHERE return_date IS NOT NULL;
+
+-- answer to 5.4
+SELECT DISTINCT count(last_name) FROM actor;
+
+-- answer to 6
+SELECT *
+FROM film
+ORDER BY length DESC
+LIMIT 10;
+
+-- answer to 7.1
+SELECT * 
+FROM actor
+WHERE first_name = "SCARLETT";
+
+-- answer to 7.2
+SELECT * FROM film
+WHERE title LIKE "%ARMAGEDDON%" AND length > 100;
+
+-- answer to 7.3
+SELECT count(film_id) FROM film
+WHERE special_features LIKE "%Behind the scenes%";
+