date_trunc('month',block_timestamp) as dt1,

sum (amount_usd) as swap_volume1

from ethereum.udm_events

where FROM_LABEL='paraswap'

and block_timestamp between '2021-01-01' and '2022-01-01'

group by 1),

t2 as (select

date_trunc('month',block_timestamp) as dt2,

sum (amount_usd) as swap_volume2

from ethereum.udm_events

where to_LABEL='paraswap'

and block_timestamp between '2021-01-01' and '2022-01-01'

group by 1)

select

t1.dt1 as dt,

swap_volume1+swap_volume2 as total_swap

from t1 inner join t2 on t1.dt1=t2.dt2