[프로그래머스 SQL 고득점 Kit] GROUP BY: 조건에 맞는 사용자와 총 거래금액 조회하기

🤔 문제

✅ 정답

SELECT B.USER_ID, B.NICKNAME, SUM(PRICE) AS TOTAL_SALES
FROM USED_GOODS_BOARD AS A JOIN USED_GOODS_USER AS B ON A.WRITER_ID = B.USER_ID
WHERE STATUS = 'DONE'
GROUP BY A.WRITER_ID
HAVING TOTAL_SALES >= 700000
ORDER BY TOTAL_SALES