Solved lab

lab-sql-basic-queries.sql

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+-- Setting the working database
+USE sakila;
+
+-- Display all available tables in the Sakila database.
+SHOW TABLES;
+
+-- Retrieve all the data from the tables actor, film and customer.
+select * from sakila.actor;
+select * from sakila.film;
+select * from sakila.customer;
+select * from sakila.language;
+select * from sakila.staff;
+select * from store;
+select * from sakila.rental;
+select * from sakila.inventory;
+select * from sakila.rental;
+select * from sakila.actor;
+
+-- 3.1 Titles of all films from the film table
+select title from sakila.film;
+
+-- 3.2 List of languages used in films, with the column aliased as language from the language table
+select name as language from sakila.language as l
+	where l.language_id in (
+select distinct language_id from sakila.film as f);
+
+-- 3.3 List of first names of all employees from the staff table
+select first_name from sakila.staff;
+
+-- Retrieve unique release years.
+select distinct release_year as year from sakila.film;
+
+-- 5.1 Determine the number of stores that the company has.
+select count(store_id) from sakila.store;
+
+-- 5.2 Determine the number of employees that the company has.
+select count(*) from sakila.staff;
+
+-- 5.3 Determine how many films are available for rent and how many have been rented.
+select count(distinct(inventory_id)) AS Rented, ((select count(film_id) from sakila.inventory) - count(distinct(inventory_id))) as Available from sakila.rental;
+
+select count(film_id) from sakila.inventory;
+
+-- 5.4 Determine the number of distinct last names of the actors in the database.
+select COUNT(distinct(last_name)) from sakila.actor;
+
+-- Retrieve the 10 longest films.
+select * from sakila.film order by length DESC limit 10;
+
+-- 7.1 Retrieve all actors with the first name "SCARLETT".
+SELECT * FROM sakila.actor WHERE first_name LIKE 'SCARLETT%';
+-- SELECT *, LOWER(A2), UPPER(A3) FROM bank.district
+
+-- BONUS:
+
+-- 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes.
+SELECT * FROM sakila.film WHERE length > 100 and title LIKE '%ARMAGEDDON%';
+
+-- 7.3 Determine the number of films that include Behind the Scenes content
+SELECT * FROM sakila.film WHERE special_features LIKE '%Behind the Scenes%';
+
+
+
+