Sum total of table with two related tables

Question

I\'m here with this (I\'m sure it is) simple question I can\'t figure out how to solve.

I have this schema:

Answer 1

SELECT p.name AS PERSON_NAME, 
    IFNULL(SUM(f.cost),0) AS TOTAL_FRUIT, 
    IFNULL(SUM(c.cost),0) AS TOTAL_COOKIE
FROM person AS p
LEFT JOIN fruit as f
    ON p.idperson = f.person_idperson
LEFT JOIN cookie as c
    ON p.idperson = c.person_idperson
GROUP BY p.idperson