USERS AS (

SELECT BUYER FROM flow.core.ez_nft_sales SALES WHERE NFT_COLLECTION = 'A.329feb3ab062d289.RaceDay_NFT' AND TX_SUCCEEDED = 'TRUE' GROUP BY 1 UNION

SELECT SELLER FROM flow.core.ez_nft_sales SALES WHERE NFT_COLLECTION = 'A.329feb3ab062d289.RaceDay_NFT' AND TX_SUCCEEDED = 'TRUE' GROUP BY 1 )

SELECT COUNT (DISTINCT BUYER) FROM USERS