diff --git a/sqd_basic_queries.sql b/sqd_basic_queries.sql new file mode 100644 index 0000000..040b4b6 --- /dev/null +++ b/sqd_basic_queries.sql @@ -0,0 +1,59 @@ +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 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; + +-- 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 store; + +-- 5.2 Determine the number of employees that the company has. +SELECT COUNT(staff_id) FROM staff; + +-- 5.3 Determine how many films are available for rent and how many have been rented. +SELECT COUNT(DISTINCT film_id) from inventory; + +SELECT COUNT(DISTINCT i.film_id) AS films_rented FROM rental AS r +JOIN inventory AS i +ON r.inventory_id = i.inventory_id; + +-- 5.4 Determine the number of distinct last names of the actors in the database. +SELECT DISTINCT COUNT(last_name) FROM actor; + +-- Retrieve the 10 longest films. +SELECT title, length from film +ORDER BY length DESC +LIMIT 10; + +-- Use filtering techniques in order to: + +-- 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 have a duration longer than 100 minutes. + +-- Hint: use LIKE operator. More information here. +-- 7.3 Determine the number of films that include Behind the Scenes content \ No newline at end of file