diff --git a/basic-queries.sql b/basic-queries.sql new file mode 100644 index 0000000..b0b5024 --- /dev/null +++ b/basic-queries.sql @@ -0,0 +1,48 @@ +# Display all available tables in the Sakila database - Done +USE sakila; +SELECT COUNT(*) FROM actor; + +# Retrieve all the data from the tables actor, film and customer. +SELECT * FROM actor; +SELECT * FROM film; +SELECT * FROM customer; + +# 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; + +# Retrieve unique release years. +SELECT DISTINCT release_year FROM film; + +# 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(*) FROM film; +SELECT COUNT(DISTINCT inventory_id) FROM rental; + +# 5.4 Determine the number of distinct last names of the actors in the database. +SELECT COUNT(DISTINCT last_name) FROM actor; + +# Retrieve the 10 longest films. +SELECT title, length +FROM film +ORDER BY length DESC +LIMIT 10; + +# Use filtering techniques in order to: +# Retrieve all actors with the first name "SCARLETT". +SELECT FROM actor +WHERE first_name = 'SCARLETT' + +