Create salika_lab.sql

salika_lab.sql

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+-- ---------------------------------------------------
+-- Lab: SQL Basic Queries (using Sakila database)
+-- ---------------------------------------------------
+
+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 specific columns
+-- 3.1 Titles of all films from the film table
+SELECT title FROM film;
+
+-- 3.2 List of languages used in films, aliased as 'language'
+SELECT 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 FROM film;
+
+-- 5. Counting records for database insights
+-- 5.1 Number of stores
+SELECT COUNT(*) AS total_stores FROM store;
+
+-- 5.2 Number of employees
+SELECT COUNT(*) AS total_employees FROM staff;
+
+-- 5.3 Number of films available for rent and how many have been rented
+SELECT COUNT(*) AS total_inventory FROM inventory;
+SELECT COUNT(DISTINCT inventory_id) AS total_rented FROM rental;
+
+-- 5.4 Number of distinct actor last names
+SELECT COUNT(DISTINCT last_name) AS distinct_actor_last_names FROM actor;
+
+-- 6. Retrieve the 10 longest films
+SELECT title, length
+FROM film
+ORDER BY length DESC
+LIMIT 10;
+
+-- 7. Filtering techniques
+-- 7.1 Retrieve all actors with the first name "SCARLETT"
+SELECT * FROM actor WHERE first_name = 'SCARLETT';
+
+-- BONUS 7.2 Retrieve all movies that have ARMAGEDDON in their title and duration > 100 min
+SELECT film_id, title, length
+FROM film
+WHERE title LIKE '%ARMAGEDDON%' AND length > 100;
+
+-- BONUS 7.3 Determine the number of films that include Behind the Scenes content
+SELECT COUNT(*) AS films_with_bts
+FROM film
+WHERE special_features LIKE '%Behind the Scenes%';
+
+