WITH temp AS(
    SELECT
        SUBSTR(SALES_DATE, -3, -7) AS YEAR_MONTH
        , SUM(SALES_AMT) AS MONTH_AMT
    FROM
        SALES
    WHERE
        UPDATED_NO IS NULL
    GROUP BY 1
), temp1 AS(
    SELECT
        YEAR_MONTH
        , MONTH_AMT
        , SUM(MONTH_AMT) OVER (ORDER BY YEAR_MONTH ROWS BETWEEN 11 PRECEDING AND CURRENT ROW) AS YEAR_MOVE_AMT
    FROM
        temp
)
SELECT
    YEAR_MONTH
    , MONTH_AMT
    , SUM(MONTH_AMT) OVER (ORDER BY YEAR_MONTH) AS CUML_AMT
    , YEAR_MOVE_AMT
FROM
    temp1
WHERE
    YEAR_MONTH BETWEEN '2023-01' AND '2023-12'