SELECT COUNT(DISTINCT(TX_HASH)) as total_swap ,
'optimism' as platform
FROM optimism.sushi.ez_swaps
UNION
SELECT COUNT(DISTINCT(TX_HASH)) as total_swap ,
'arbitrum' as platform
FROM arbitrum.sushi.ez_swaps
UNION
SELECT COUNT(DISTINCT(TX_HASH)) as total_swap ,
'polygon' as platform
FROM polygon.sushi.ez_swaps