[sql] 날짜별 이동평균, 월간 누적매출, 매출 z차트 만들기
날짜별 이동평균, 월간 누적매출 DROP TABLE IF EXISTS purchase_log; CREATE TABLE purchase_log( dt varchar(255) , order_id integer , user_id varchar(255) , purchase_amount integer ); INSERT INTO purchase_log VALUES ('2014-01-01', 1, 'rhwpvvitou', 13900) , ('2014-01-01', 2, 'hqnwoamzic', 10616) , ('2014-01-02', 3, 'tzlmqryunr', 21156) , ('2014-01-02', 4, 'wkmqqwbyai', 14893) , ('2014-01-03', 5, 'ciecbedwbq', 130..
2022. 9. 26.