WITH RECURSIVE MONTH(YM, MRR) AS(
SELECT (SELECT MIN(MONTHLY) FROM MRR_DATA) AS YM, 0 AS MRR
UNION ALL
SELECT DATE(YM, '+1 MONTH'), MRR + (SELECT NEW_MRR + EXPANSION_MRR - DOWNGRADE_MRR - CHURN_MRR FROM MRR_DATA WHERE MONTHLY = YM)
FROM MONTH
WHERE DATE(YM, '+1 MONTH') <= '2023-01-01'
) 

SELECT YM, MRR FROM MONTH ORDER BY YM