Week 3 Day 2 Lab 1 Solved

sql_basic_queries.sql

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+USE sakila;
+
+-- 1. Display all the tables of the database
+SHOW TABLES;	
+
+-- 2. Retrieve all the data from the tables actor, film and customer
+SELECT * FROM sakila.actor;
+
+SELECT * FROM sakila.film;
+
+SELECT * FROM sakila.customer;
+
+-- Retrieve the following columns from their respective tables:
+-- 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;
+
+-- 3.3 List of first names of all employees from the staff table
+SELECT first_name FROM sakila.staff;
+
+-- 4 Retrieve unique release years.
+SELECT DISTINCT release_year FROM sakila.film;
+
+-- 5 Counting records for database insights:
+-- 5.1 Determine the number of stores that the company has.
+SELECT COUNT(store_id) AS number_of_stores
+FROM sakila.store;
+
+-- 5.2 Determine the number of employees that the company has.
+SELECT COUNT(staff_id) AS number_of_employees
+FROM sakila.staff;
+
+-- 5.3 Determine how many films are available for rent and how many have been rented.
+SELECT COUNT(*) AS films_cuurently_rented
+FROM sakila.rental
+WHERE rental_date IS NULL AND rental_date IS NOT NULL;
+
+-- 5.4 Determine the number of distinct last names of the actors in the database.
+SELECT COUNT(DISTINCT last_name) AS distinct_last_names
+FROM sakila.actor;
+
+-- 6. Retrieve the 10 longest films.
+SELECT title, length FROM sakila.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 sakila.actor
+WHERE first_name = "SCARLETT";
+
+-- BONUS 7.2 Retrieve all movies that have ARMAGEDDON in their title and have a duration longer than 100 minutes.
+SELECT title, length
+FROM sakila.film
+WHERE title LIKE '%ARMAGEDDON%'
+AND length > 100;
+
+-- 7.3 Determine the number of films that include Behind the Scenes content
+SELECT COUNT(*) AS film_with_behind_the_scenes
+FROM sakila.film
+WHERE special_features LIKE '%Behind the Scenes%';