From 32e7c6242fed34091aefa7cd4789f344b4e2266e Mon Sep 17 00:00:00 2001 From: Carla Fajula Date: Thu, 6 Aug 2026 17:38:54 +0200 Subject: [PATCH] Solved LAB --- lab-sql-basic-queries.sql | 53 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 lab-sql-basic-queries.sql diff --git a/lab-sql-basic-queries.sql b/lab-sql-basic-queries.sql new file mode 100644 index 0000000..71bfdd1 --- /dev/null +++ b/lab-sql-basic-queries.sql @@ -0,0 +1,53 @@ +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; + +-- 5. Counting records for database insights: +-- 5.1 Determine the number of stores that the company has. +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(*) AS available_for_rent FROM inventory; + +SELECT COUNT(*) AS rented FROM rental; + +-- 5.4 Determine the number of distinct last names of the actors in the database. +SELECT COUNT(DISTINCT(last_name)) FROM actor; + +-- 6. Retrieve the 10 longest films. +SELECT title, length FROM film ORDER BY length DESC, title ASC 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'; + +-- 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. +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(*) AS films_with_behind_the_scenes +FROM film WHERE special_features LIKE '%Behind the Scenes%'; \ No newline at end of file