[lab-stored-procedures] Izel

[izelyekrek]

No description provided.

[ArabellaCM]

HI Izel. I'm taking a look at your Stored Procedures Lab.

Your queries don't quite return the results the questions have asked for. You should be sending a parameter into your stored procedure and the query inside returns the results you want according to the parameter.
So the general structure is:

delimiter //
create procedure new_procedure(in category_string int)
begin
select columns from your_table
where title = category_string
end;
// 
delimiter ;

Here is a solution to the second question which asks for a stored procedure which will return all the films of the Action category:

drop procedure if exists customer_info_by_film_category;
delimiter //
create procedure customer_info_by_film_category (in param varchar(20))
begin
    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 = param
    group by first_name, last_name, email;
end;
//
delimiter ;

call customer_info_by_film_category("Action");

Make sure you understand how stored procedures work because they can make your life in SQL a lot smoother :) Let me know if you have any problems.