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 name, IFNULL(f.total, 0) AS total_fruit, IFNULL(c.total, 0) AS total_cookie
FROM person AS p
LEFT JOIN (SELECT person_idperson, SUM(cost) AS total
           FROM fruit
           GROUP BY person_idperson) AS f
ON p.idperson = f.person_idperson
LEFT JOIN (SELECT person_idperson, SUM(cost) AS total
           FROM cookie
           GROUP BY person_idperson) AS c
ON p.idperson = c.person_idperson