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_BOARD B
JOIN USED_GOODS_USER  U ON B.writer_id = user_id
WHERE status = "DONE"
GROUP BY user_id
HAVING SUM(PRICE) >= 700000
ORDER BY total_sales