[오늘의 알고리즘] 년, 월, 성별 별 상품 구매 회원 수 구하기 (#52)

Co-authored-by: unknown <Administrator@SKCC20N00129.SKCC.NET>

Author: yongjun-0903

yongjun-0903/년, 월, 성별 별 상품 구매 회원 수 구하기.sql

@@ -0,0 +1,7 @@
+-- 코드를 입력하세요
+SELECT EXTRACT(YEAR FROM s.SALES_DATE) AS YEAR, EXTRACT(MONTH FROM s.SALES_DATE) AS MONTH, u.GENDER, COUNT(DISTINCT s.USER_ID) AS USERS
+FROM ONLINE_SALE s
+JOIN USER_INFO u ON s.USER_ID = u.USER_ID
+WHERE u.GENDER IS NOT NULL
+GROUP BY EXTRACT(YEAR FROM s.SALES_DATE), EXTRACT(MONTH FROM s.SALES_DATE), u.GENDER
+ORDER BY YEAR, MONTH, GENDER