select trader, token_1_currency, sum(token_1_amount_usd) as Volume_USD, avg(token_1_amount_usd) as Average_Size_USD
from terra.swaps
where token_1_amount_usd is not null and tx_status = 'SUCCEEDED' and token_1_currency = 'UST'
group by 1,2
order by 3 DESC
limit 10