diff --git a/lab-sql-basic-queries.sql b/lab-sql-basic-queries.sql new file mode 100644 index 0000000..b4f0faf --- /dev/null +++ b/lab-sql-basic-queries.sql @@ -0,0 +1,96 @@ + +-- 1. Display all available tables in the Sakila database. + +USE sakila; + +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 +DISTINCT 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(DISTINCT store_id) AS number_stores +FROM store; + +-- 5.2 Determine the number of employees that the company has. +SELECT +COUNT(DISTINCT staff_id) AS number_staff +FROM staff; + +-- 5.3 Determine how many films are available for rent and how many have been rented. +SELECT +COUNT(DISTINCT film_id) AS number_film +FROM film; + +SELECT +COUNT(rental_id) AS number_rentals +FROM rental; + +-- 5.4 Determine the number of distinct last names of the actors in the database. +SELECT +COUNT(DISTINCT last_name) AS number_last_name +FROM actor; + +-- 6. Retrieve the 10 longest films. +SELECT +title, +length +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 +first_name, +last_name +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 * +FROM film; + +SELECT +COUNT(title) +FROM film +WHERE special_features LIKE '%Behind the Scenes%'; \ No newline at end of file