diff --git a/lab_sakila_basic_queries.sql b/lab_sakila_basic_queries.sql new file mode 100644 index 0000000..c210e6b --- /dev/null +++ b/lab_sakila_basic_queries.sql @@ -0,0 +1,48 @@ +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(store_id) 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(inventory_id) FROM inventory; # the items available for rent + SELECT COUNT(rental_date) FROM rental; # the items that have been rented + + -- 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 * +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"; \ No newline at end of file