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lab-sql-basic-queries.sql

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+
+-- First We use sakila
+USE sakila;
+
+-- To show tables we 
+SHOW TABLES;
+
+-- To get all from table actor
+SELECT *
+FROM actor;
+
+-- To get all from table film
+SELECT *
+FROM film;
+
+-- To get all from table customer
+SELECT *
+FROM customer;
+
+-- 3.1 Titles of all films from the film table
+SELECT title
+FROM film;
+
+-- 3.2 List of languages used in films, with the column aliased as language from the language table
+
+SELECT name AS language
+FROM language;
+
+-- 3.3 List of first names of all employees from the staff table
+
+SELECT first_name 
+FROM staff;
+
+-- Retrieve unique release years.
+SELECT distinct release_year  
+FROM film;
+
+-- 5. Counting records for database insights:
+-- 		5.1 Determine the number of stores that the company has.
+
+SELECT COUNT(store_id)
+FROM store;
+ -- SAME AS
+
+ SELECT COUNT(*)
+ FROM store;
+
+-- 		5.2 Determine the number of employees that the company has.
+
+ SELECT COUNT(*)
+ FROM staff;
+
+-- 5.3 Determine how many films are available for rent and how many have been rented.
+
+SELECT COUNT(*) 
+FROM inventory;
+
+SELECT COUNT(DISTINCT inventory_id) AS films_rented
+FROM rental;
+
+-- Retrieve the 10 longest films.
+SELECT *
+FROM film
+ORDER BY length DESC 
+LIMIT 10;
+
+-- 7. Use filtering techniques in order to:
+-- 		7.1 Retrieve all actors with the first name "SCARLETT".
+
+SELECT *
+FROM actor
+WHERE first_name = 'Scarlett';
+
+-- 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes.
+-- 		Hint: use LIKE operator. More information here.
+SELECT *
+FROM film
+WHERE title LIKE '%armageddon%' AND length > 100;
+
+
+-- 7.3 Determine the number of films that include Behind the Scenes content
+
+SELECT COUNT(*)
+FROM film
+WHERE special_features LIKE '%Behind the Scenes%';