Basic Queries

Basic Queries.sql

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+USE sakila
+-- 1.Display all available tables in the Sakila database.
+
+SHOW TABLES;
+
+-- 2.Retrieve all the data from the tables actor, film and customer.
+SELECT* 
+FROM actor;
+
+SELECT* 
+FROM film;
+
+SELECT* 
+FROM customer;
+
+-- 3.Retrieve the following columns from their respective tables:
+-- 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 
+  DISTINCT name AS language
+FROM language;
+-- 3.3 List of first names of all employees from the staff table
+SELECT first_name
+FROM staff;
+-- 4. Retrieve unique release years.
+SELECT DISTINCT release_year AS release_year
+FROM film;
+
+-- 5.Counting records for database insights:
+-- 5.1 Determine the number of stores that the company has.
+SELECT COUNT(DISTINCT store_id)
+FROM store;
+
+-- 5.2 Determine the number of employees that the company has.
+SELECT COUNT(DISTINCT staff_id)
+FROM staff;
+
+-- 5.3 Determine how many films are available for rent and how many have been rented.
+SELECT 
+  (SELECT COUNT(*) FROM inventory) AS all_films,
+  (SELECT COUNT(DISTINCT inventory_id) FROM rental) AS total_rentals,
+  (SELECT COUNT(*) FROM inventory) - (SELECT COUNT(DISTINCT inventory_id) FROM rental) AS films_available;
+
+
+-- 5.4 Determine the number of distinct last names of the actors in the database.
+SELECT COUNT(DISTINCT last_name) AS num_lastnames
+FROM actor;
+
+-- 6. Retrieve the 10 longest films.
+SELECT 
+  title,
+  length
+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.
+SELECT *
+FROM film
+WHERE title LIKE '% ARMAGEDDON%';
+
+-- 7.3 Determine the number of films that include Behind the Scenes content
+SELECT *
+FROM film
+WHERE special_features LIKE '%behind the scenes%';
+
+

README.md

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 ![logo_ironhack_blue 7](https://user-images.githubusercontent.com/23629340/40541063-a07a0a8a-601a-11e8-91b5-2f13e4e6b441.png)
 
-# LAB | SQL Basic Queries
+# LAB | SQL Basic Queries DE ANDRÉS
 
 <details>
   <summary>

Untitled-1.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "ed5eb8a6",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "word = 'Testing branches'"
+   ]
+  }
+ ],
+ "metadata": {
+  "language_info": {
+   "name": "python"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}