Tina_lab-sql-basic-queries

basic_queries.sql

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+-- LAB | SQL Basic Queries
+USE sakila;
+-- Question 1: Display all available tables
+SHOW TABLES;
+
+-- Question 2: Retrieve all data from actor, film and customer
+SELECT * FROM actor;
+
+SELECT * FROM film;
+
+SELECT * FROM customer;
+
+-- Question 3.1: Titles of all films
+SELECT title
+FROM film;
+
+-- Question 3.2: Languages used in films
+SELECT name AS language
+FROM language;
+
+-- Question 3.3: First names of all employees
+SELECT first_name
+FROM staff;
+
+-- Question 4: Retrieve unique release years
+SELECT DISTINCT release_year
+FROM film;
+
+-- Question 5.1: Number of stores
+SELECT COUNT(*) as number_of_store 
+FROM store;
+
+-- Question 5.2: Number of employees
+SELECT count(*) AS number_of_employee
+FROM staff;
+
+-- Question 5.3.1: Number of films available for rent
+SELECT COUNT(*) AS films_available
+FROM inventory;
+
+-- Question 5.3.2: Number of films that have been rented
+SELECT COUNT(*) AS films_rented 
+FROM rental;
+
+-- Question 5.4: Number of distinct actor last names
+SELECT COUNT(DISTINCT last_name) AS distinct_last_names
+FROM actor;
+
+-- Question 6: Retrieve the 10 longest films
+SELECT title, length
+FROM film
+ORDER BY length DESC
+LIMIT 10;
+
+-- Question 7.1: Actors named SCARLETT
+SELECT *
+FROM actor
+WHERE first_name = 'SCARLETT';
+
+-- Bonus 7.2: ARMAGEDDON movies longer than 100 minutes
+SELECT title, length
+FROM film
+WHERE title like '%ARMAGEDDON%'
+AND length>100;
+
+-- Bonus 7.3: Films with Behind the Scenes content
+SELECT COUNT(*) AS behind_the_scenes_films
+FROM film
+WHERE special_features LIKE '%Behind the scenes%';
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