5월 식품들의 총매출 조회하기

https://school.programmers.co.kr/learn/courses/30/lessons/131117

프로그래머스

[문제]

FOOD_PRODUCT와 FOOD_ORDER 테이블에서 생산일자가 2022년 5월인 식품들의 식품 ID, 식품 이름, 총매출을 조회하는 SQL문을 작성해주세요. 이때 결과는 총매출을 기준으로 내림차순 정렬해주시고 총매출이 같다면 식품 ID를 기준으로 오름차순 정렬해주세요.

 

[나의 풀이]

SELECT
P.PRODUCT_ID,
PRODUCT_NAME,
SUM(PRICE*AMOUNT) TOTAL_SALES
FROM FOOD_PRODUCT P LEFT JOIN FOOD_ORDER O
ON P.PRODUCT_ID = O.PRODUCT_ID
WHERE PRODUCE_DATE LIKE "2022-05%"
GROUP BY PRODUCT_ID, PRODUCT_NAME
ORDER BY TOTAL_SALES DESC, PRODUCT_ID;

 

[다른 풀이]

SELECT A.PRODUCT_ID, B.PRODUCT_NAME, (SUM(A.AMOUNT) * B.PRICE) AS TOTAL_SALES
FROM FOOD_ORDER A
JOIN FOOD_PRODUCT B ON A.PRODUCT_ID = B.PRODUCT_ID
WHERE YEAR(PRODUCE_DATE) = 2022 AND MONTH(PRODUCE_DATE) = 5
GROUP BY A.PRODUCT_ID
ORDER BY TOTAL_SALES DESC, A.PRODUCT_ID ASC;

SELECT A.PRODUCT_ID, A.PRODUCT_NAME, SUM(A.PRICE*B.AMOUNT) AS TOTAL_SALES
FROM FOOD_PRODUCT A JOIN FOOD_ORDER B
ON A.PRODUCT_ID = B.PRODUCT_ID
WHERE PRODUCE_DATE>='2022-05-01' AND PRODUCE_DATE<='2022-05-31'
GROUP BY A.PRODUCT_ID
ORDER BY TOTAL_SALES DESC, PRODUCT_ID ASC;

SELECT P.PRODUCT_ID, P.PRODUCT_NAME, P.PRICE * O.AMOUNT AS TOTAL_SALES
FROM FOOD_PRODUCT P
JOIN (
    SELECT PRODUCT_ID, SUM(AMOUNT) AS AMOUNT
    FROM FOOD_ORDER
    WHERE DATE_FORMAT(PRODUCE_DATE, '%Y-%m') = '2022-05'
    GROUP BY PRODUCT_ID
    ) O
ON P.PRODUCT_ID = O.PRODUCT_ID
ORDER BY TOTAL_SALES DESC, P.PRODUCT_ID;