louiscostes / lab-stored-procedures

Lab | Stored procedures

In this lab, we will continue working on the Sakila database of movie rentals.

Instructions

Write queries, stored procedures to answer the following questions:

• In the previous lab we wrote a query to find first name, last name, and emails of all the customers who rented Action movies. Convert the query into a simple stored procedure. Use the following query:

    select first_name, last_name, email
    from customer
    join rental on customer.customer_id = rental.customer_id
    join inventory on rental.inventory_id = inventory.inventory_id
    join film on film.film_id = inventory.film_id
    join film_category on film_category.film_id = film.film_id
    join category on category.category_id = film_category.category_id
    where category.name = "Action"
    group by first_name, last_name, email;

• Now keep working on the previous stored procedure to make it more dynamic. Update the stored procedure in a such manner that it can take a string argument for the category name and return the results for all customers that rented movie of that category/genre. For eg., it could be action, animation, children, classics, etc.

• Write a query to check the number of movies released in each movie category. Convert the query in to a stored procedure to filter only those categories that have movies released greater than a certain number. Pass that number as an argument in the stored procedure.