WITH SUB1 AS (
    SELECT
        MEMBER_CODE
        , MIN(DATE(LOGIN_DATETIME)) AS FIRST_LOGIN
    FROM
        ACCESS_LOG
    WHERE
        LOGIN_DATETIME BETWEEN '2023-08-01' AND '2023-08-31'
    GROUP BY
        MEMBER_CODE
)
SELECT
    FIRST_LOGIN
    , COUNT(MEMBER_CODE) AS MEMBER_CNT
FROM
    SUB1
GROUP BY
    FIRST_LOGIN
ORDER BY
    FIRST_LOGIN DESC
;