[SQL 고득점 Kit / GROUP BY ] Level 2 - 성분으로 구분한 아이스크림 총 주문량
SELECT I.INGREDIENT_TYPE, SUM(H.TOTAL_ORDER) AS TOTAL_ORDER FROM FIRST_HALF H JOIN ICECREAM_INFO I ON H.FLAVOR = I.FLAVOR GROUP BY I.INGREDIENT_TYPE ORDER BY SUM(H.TOTAL_ORDER)