From c4018fafdfde0503b9d105b87f7dff8d1553d1dd Mon Sep 17 00:00:00 2001 From: levgirgin Date: Fri, 15 Aug 2025 13:11:56 +0200 Subject: [PATCH] Solved Lab --- sql_basic_queries_lab.sql | 79 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 sql_basic_queries_lab.sql diff --git a/sql_basic_queries_lab.sql b/sql_basic_queries_lab.sql new file mode 100644 index 0000000..2509a3a --- /dev/null +++ b/sql_basic_queries_lab.sql @@ -0,0 +1,79 @@ +USE sakila; + +-- Display all available tables in the Sakila database + +SHOW TABLES; + +-- Retrieve all the data from the tables actor, film and customer. + +SELECT * FROM actor; +SELECT * FROM film; +SELECT * FROM customer; + +-- Titles of all films from the film table + +SELECT title +FROM film; + +-- List of languages used in films, with the column aliased as language from the language table + +SELECT name AS language +FROM language; + +-- 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; + +-- 5.1 Determine the number of stores that the company has + +SELECT COUNT(*) AS total_stores +FROM store; + +-- 5.2 Determine the number of employees that the company has. + +SELECT COUNT(*) AS total_employees +FROM staff; + +-- 5.3 Determine how many films are available for rent and how many have been rented. + +SELECT COUNT(*) AS available_films +FROM inventory; + +SELECT COUNT(DISTINCT inventory_id) AS rented_films +FROM rental; +-- 5.4 Determine the number of distinct last names of the actors in the database. + +SELECT COUNT(DISTINCT last_name) AS unique_last_names +FROM actor; + +-- Retrieve the 10 longest films. + +SELECT title, + length +FROM film +ORDER BY length DESC +LIMIT 10; + +-- 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. + +SELECT title, length +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 behind_the_scenes_films +FROM film +WHERE special_features LIKE '%Behind the Scenes%'; \ No newline at end of file