[GROUP BY 2개항목] 조건에 맞는 사용자와 총 거래금액 조회하기

https://school.programmers.co.kr/learn/courses/30/lessons/164668

프로그래머스

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