,sum(borrow_amount)over(order by date)as cumulative_borrowed

, case

when date>='2020-05-05'and date<'2021-01-01' then '2020'

when date>='2021-01-01'and date<'2022-01-01' then '2021'

when date>='2020-01-01' then '2022' end as time_period

from ethereum.compound.ez_borrows

where date>='2020-05-05'

group by 1