프로그래머스 상품 별 오프라인 매출 구하기

https://school.programmers.co.kr/learn/courses/30/lessons/131533

프로그래머스

SELECT P.PRODUCT_CODE, SUM(P.PRICE * O.SALES_AMOUNT) AS SALES
FROM PRODUCT P JOIN OFFLINE_SALE O
ON P.PRODUCT_ID = O.PRODUCT_ID
GROUP BY P.PRODUCT_CODE
ORDER BY SALES DESC, P.PRODUCT_CODE;

SELECT P.PRODUCT_CODE, P.PRICE * O.SALES_AMOUNT AS SALES
FROM PRODUCT P
INNER JOIN (
    SELECT PRODUCT_ID, SUM(SALES_AMOUNT) AS SALES_AMOUNT
    FROM OFFLINE_SALE
    GROUP BY PRODUCT_ID
) O
ON P.PRODUCT_ID = O.PRODUCT_ID
ORDER BY SALES DESC, P.PRODUCT_CODE;