SELECT
    YEAR_MONTH,
    MONTH_AMT,
    SUM(MONTH_AMT) OVER(ORDER BY ym_idx ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS CUML_AMT,
    YEAR_MOVE_AMT
FROM (
    SELECT
        YEAR_MONTH,
        ym_idx,
        MONTH_AMT,
        SUM(MONTH_AMT) OVER(ORDER BY ym_idx RANGE BETWEEN 11 PRECEDING AND CURRENT ROW) AS YEAR_MOVE_AMT
    FROM (
        SELECT
            STRFTIME("%Y-%m", DATE(SALES_DATE, "START OF MONTH")) AS YEAR_MONTH,
            DATE(SALES_DATE, "START OF MONTH") AS ymd,
            CAST(STRFTIME("%Y", DATE(SALES_DATE, "START OF MONTH")) AS INT) * 12 + CAST(STRFTIME("%m", DATE(SALES_DATE, "START OF MONTH")) AS INT) AS ym_idx,
            SUM(SALES_AMT) AS MONTH_AMT
        FROM
            SALES
        WHERE
            UPDATED_NO IS NULL
            -- AND ymd >= "2023-01-01"
        GROUP BY
            ymd
    )
)
WHERE 
    YEAR_MONTH >= "2023-01"
ORDER BY
    YEAR_MONTH ASC