select date_trunc('month',BLOCK_TIMESTAMP)as month,sum(LOAN_AMOUNT_USD)as borrow_amount
, case
when month>='2020-05-01'and month<'2021-01-01' then '2020'
when month>='2021-01-01'and month<'2022-01-01' then '2021'
when month>='2020-01-01' then '2022' end as time_period
from ethereum.compound.ez_borrows
where month>='2020-05-01'
group by 1
order by 1