[Programmers Lv.4] 년, 월, 성별 별 상품 구매 회원 수 구하기 - 131532

Question

 

USER_INFO 테이블과 ONLINE_SALE 테이블에서 년, 월, 성별 별로 상품을 구매한 회원수를 집계하는 SQL문을 작성해주세요. 결과는 년, 월, 성별을 기준으로 오름차순 정렬해주세요. 이때, 성별 정보가 없는 경우 결과에서 제외해주세요.

 

 

Code

 

SELECT YEAR(SALES_DATE) AS YEAR
        , MONTH(SALES_DATE) AS MONTH
        , GENDER
        , COUNT(DISTINCT U.USER_ID) AS USERS

FROM USER_INFO U
JOIN ONLINE_SALE S ON U.USER_ID = S.USER_ID
WHERE GENDER IS NOT NULL

GROUP BY 1,2,3
ORDER BY 1,2,3

 

now me

On my github