Solved lab

lab-sql_basic_queries.sql

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+-- #1 - display all tables 
+use sakila;
+show tables;
+-- retrieve all data from actor, film and customer
+select * 
+from actor, film, customer;
+-- 3.1
+select title
+from film;
+-- 3.2 
+select name as language
+from language;
+-- 3.3 
+select *
+from staff; 
+-- 4
+select distinct release_year 
+from film; 
+-- 5.1
+select count(store_id)
+from store;
+-- 5.2
+select count(staff_id)
+from staff;
+-- 5.3 
+-- rented:
+select count(rental_id) from rental;
+-- not rented: 
+SELECT COUNT(inventory_id) FROM inventory;
+-- how many films are available for rent:
+SELECT 
+    (SELECT COUNT(inventory_id) FROM rental) -
+    (SELECT COUNT(inventory_id) FROM inventory) AS films_available_for_rent;
+-- 5.4 
+select count(distinct last_name)
+from actor;
+-- 6: 10 longest fimls:
+select film_id, title, length from film 
+order by length DESC; 
+-- 7.1 all actors with fn scarlett: 
+select actor_id, first_name from actor
+where first_name = 'SCARLETT'; 
+-- bonus 
+-- 7.2 retrieve all mmovies that have amrageddon in title and have duration longer than 100m 
+select film_id, title from film
+where title like '%ARMAGEDDON%'; 
+-- 7.3 determine number of film 
+select title, special_features from film
+where special_features like '%Behind the Scenes%'; 
+
+