with
    tmp as (
        select
            min(monthly) as monthly
            ,0 as mrr
        from 
            mrr_data
        union all
        select
            monthly
            ,mrr + NEW_MRR + EXPANSION_MRR + DOWNGRADE_MRR + CHURN_MRR as mrr
        from
            mrr_data
        )

select *
from tmp

--         select
--             monthly
--             ,NEW_MRR + EXPANSION_MRR + DOWNGRADE_MRR + CHURN_MRR
--         from
--             mrr_data
--         )
--     ,diff as (
--         select
--             )
;