Cannot run mysql syntax on select - mysql

Question

I tried running this in phpmyadmin...
It turned out something is not right.
I cannot figure out what is wrong here.
DELIMITER ;
create definer=proiect_wd_user#localhost FUNCTION
f_suma(id_s int, price_f double,product_code_n char(255),quantity_b int)
returns double
BEGIN
select price_f into #price_f
from orders_details WHERE (id=id_s)
select quantity_b into #quantity_b
from orders_details WHERE (id=id_s)
set #suma_f=(#price_f*#quantity_b);
RETURN #suma_f;
end ;
Error:
MySQL said: Documentation
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'select quantity_b into #quantity_b
from orders_details WHERE (id=id_s)
set #su' at line 7

Answer 1

There are various problems here with your delimiters. See Working with Stored Procedures in the MySQL documentation.
DROP FUNCTION IF EXISTS f_suma;
DELIMITER //
CREATE DEFINER=proiect_wd_user#localhost
FUNCTION f_suma(id_s int,price_f double,product_code_n char(255),quantity_b int)
RETURNS double
BEGIN
SELECT price_f INTO #price_f FROM orders_details WHERE (id=id_s);
SELECT quantity_b INTO #quantity_b FROM orders_details WHERE (id=id_s);
SET #suma_f=(#price_f*#quantity_b);
RETURN #suma_f;
END //
DELIMITER ;