Solved lab

solutions.sql

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+USE sakila;
+
+-- 1.
+SHOW TABLES;
+
+-- 2.
+SELECT * FROM actor;
+SELECT * FROM film;
+SELECT * FROM customer;
+SELECT * FROM store;
+-- 3.
+-- 3.1.
+SELECT title FROM film;
+-- 3.2.
+SELECT name AS language FROM language;
+-- 3.3.
+SELECT first_name FROM staff;
+
+-- 4.
+SELECT DISTINCT release_year
+FROM film
+ORDER BY release_year;
+
+-- 5.
+-- 5.1.
+SELECT COUNT(*) AS n_stores FROM store;
+
+-- 5.2.
+SELECT COUNT(*) AS n_employees FROM staff;
+
+-- 5.3.
+SELECT
+  (SELECT COUNT(*) FROM inventory) AS total_inventory,
+  (SELECT COUNT(DISTINCT inventory_id) FROM rental WHERE return_date IS NULL)  AS rented_now,
+  (SELECT COUNT(*) FROM inventory) - (SELECT COUNT(DISTINCT inventory_id) FROM rental WHERE return_date IS NULL) AS available_now; 
+
+-- 5.4.
+SELECT COUNT(DISTINCT last_name) AS distinct_actor_last_names
+FROM actor;
+
+-- 6.
+SELECT title, length
+FROM film
+ORDER BY length DESC, title
+LIMIT 10;
+
+-- 7. 
+-- 7.1.
+SELECT *
+FROM actor
+WHERE first_name = 'SCARLETT';
+
+-- 7.2.
+SELECT title, length
+FROM film
+WHERE title LIKE '%ARMAGEDDON%'
+  AND length > 100;
+
+-- 7.3.
+SELECT COUNT(*) AS films_with_behind_the_scenes
+FROM film
+WHERE FIND_IN_SET('Behind the Scenes', special_features) > 0;