diff --git a/lab-sql-basic-queries.sql b/lab-sql-basic-queries.sql new file mode 100644 index 0000000..ea05051 --- /dev/null +++ b/lab-sql-basic-queries.sql @@ -0,0 +1,85 @@ + +-- First We use sakila +USE sakila; + +-- To show tables we +SHOW TABLES; + +-- To get all from table actor +SELECT * +FROM actor; + +-- To get all from table film +SELECT * +FROM film; + +-- To get all from table customer +SELECT * +FROM customer; + +-- 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; + +-- Retrieve unique release years. +SELECT distinct release_year +FROM film; + +-- 5. Counting records for database insights: +-- 5.1 Determine the number of stores that the company has. + +SELECT COUNT(store_id) +FROM store; + -- SAME AS + + SELECT COUNT(*) + FROM store; + +-- 5.2 Determine the number of employees that the company has. + + SELECT COUNT(*) + FROM staff; + +-- 5.3 Determine how many films are available for rent and how many have been rented. + +SELECT COUNT(*) +FROM inventory; + +SELECT COUNT(DISTINCT inventory_id) AS films_rented +FROM rental; + +-- Retrieve the 10 longest films. +SELECT * +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. +-- Hint: use LIKE operator. More information here. +SELECT * +FROM film +WHERE title LIKE '%armageddon%' AND length > 100; + + +-- 7.3 Determine the number of films that include Behind the Scenes content + +SELECT COUNT(*) +FROM film +WHERE special_features LIKE '%Behind the Scenes%';