Programmers / MySQL / Lv.3 SELECT USER_ID, NICKNAME, SUM(PRICE) AS TOTAL_SALES FROM USED_GOODS_BOARD AS B INNER JOIN USED_GOODS_USER AS U ON B.WRITER_ID = U.USER_ID WHERE B.STATUS = 'DONE' GROUP BY WRITER_ID HAVING SUM(PRICE) >= 700000 ORDER BY TOTAL_SALES ASC; [해석] SELECT USER_ID, NICKNAME, SUM(PRICE) AS TOTAL_SALES : 총 판매가격이기 때문에 가격(PRICE)들의 합을 구함 FROM USED_GOODS_BOARD AS B INNER JOIN USED_GOO..