Solucion 30042026_11.18

Solution_ SQL_Basic_Queries_lab.sql

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+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 actor;
+SELECT * FROM film;
+SELECT * FROM customer;
+-- Retrieve the following columns from their respective tables--
+-- Titles of all films from the film table--
+SELECT title FROM film;
+-- List of languages used in films, with the column aliased as language from the language table--
+SELECT name AS language
+FROM language;
+-- 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
+ORDER BY release_year;
+-- Counting records for database insights: --
+-- Determine the number of stores that the company has.--
+SELECT COUNT(*) AS store_id FROM store;
+-- Determine the number of employees that the company has.--
+SELECT COUNT(*) AS number_employees FROM staff;
+-- Determine how many films are available for rent 
+SELECT COUNT(*) AS films_available
+FROM inventory AS i
+LEFT JOIN rental AS r
+    ON i.inventory_id = r.inventory_id
+    AND r.return_date IS NULL
+WHERE r.rental_id IS NULL;
+-- and how many have been rented.--
+SELECT COUNT(*) AS films_rented
+FROM inventory AS i
+JOIN rental AS r
+    ON i.inventory_id = r.inventory_id
+WHERE r.return_date IS NULL;
+
+-- Determine the number of distinct last names of the actors in the database. --  
+	SELECT 
+    COUNT(DISTINCT last_name) AS unique_last_names 
+    FROM actor;
+-- Retrieve the 10 longest films.--
+SELECT title, length
+FROM film
+ORDER BY length 
+DESC
+LIMIT 10;
+-- Use filtering techniques in order to:--
+-- Retrieve all actors with the first name "SCARLETT".--
+SELECT actor_id, first_name,last_name 
+FROM actor
+WHERE first_name = "SCARLETT";
+-- Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes.
+SELECT title, length
+FROM film
+WHERE title LIKE '%ARMAGEDDON%'
+  AND length > 100;
+--  Determine the number of films that include Behind the Scenes content
+SELECT COUNT(*) as number_Behind_the_Scene
+FROM film
+WHERE special_features LIKE 'Behind the Scenes%'
+