67 주문량이 많은 아이스크림들 조회하기SELECT H.FLAVOR FROM FIRST_HALF H JOIN JULY J ON H.FLAVOR=J.FLAVOR GROUP BY H.FLAVOR ORDER BY SUM(H.TOTAL_ORDER + J.TOTAL_ORDER) DESC LIMIT 368 저자 별 카테고리 별 매출액 집계하기SELECT B.AUTHOR_ID, AUTHOR_NAME, CATEGORY, SUM(SALES*PRICE)TOTAL_SALES FROM BOOK B JOIN AUTHOR A ON B.AUTHOR_ID=A.AUTHOR_ID JOIN BOOK_SALES BS ON BS.BOOK_ID=B.BOOK_ID WHERE SALES_DATE LIKE '2022-01%' GR..