lab solved

lab-sql-basic-queries.sql

@@ -0,0 +1,32 @@
+-- 1 
+USE sakila;  
+SHOW TABLES;  
+-- 2
+SELECT * FROM sakila.actor, sakila.film, sakila.customer; 
+-- 3
+SELECT title FROM sakila.film; 
+SELECT name AS language FROM sakila.language;
+SELECT first_name FROM sakila.staff;
+-- 4 2006 
+SELECT distinct release_year FROM sakila.film; 
+-- 5.1 number of stores 
+SELECT count(distinct store_id) as store FROM sakila.store; 
+-- 5.2 number of employees 
+SELECT count(staff_id) as number_of_employees FROM sakila.staff; 
+-- 5.3 films available for rent  
+SELECT f.title, r.return_date
+FROM sakila.rental r
+JOIN sakila.inventory i ON r.inventory_id = i.inventory_id
+JOIN sakila.film f ON i.film_id = f.film_id
+WHERE r.return_date IS NOT NULL; 
+-- 5.4 number of actors name, unique 
+SELECT count(distinct last_name)FROM sakila.actor;
+-- 6 10 longest film 
+SELECT distinct length FROM sakila.film order by length DESC LIMIT 10; 
+
+-- 7.1 all actros with 'scarlett'
+SELECT first_name, last_name FROM sakila.actor WHERE first_name LIKE 'scarlett'; 
+
+-- 7.2 retrive all ARMAGEDDON in their title duration longer than 100 
+SELECT title, length FROM sakila.film WHERE title LIKE '%ARMAGEDDON%' AND length > 100; 
+