-- Database schema
| coins : id [ INTEGER ] primary_key , name [ TEXT ] , slug [ TEXT ] , symbol [ TEXT ] , status [ TEXT ] , category [ TEXT ] , description [ TEXT ] , subreddit [ TEXT ] , notice [ TEXT ] , tags [ TEXT ] , tag_names [ TEXT ] , website [ TEXT ] , platform_id [ INTEGER ] , date_added [ TEXT ] , date_launched [ TEXT ] | historical : date [ DATE ] , coin_id [ INTEGER ] , cmc_rank [ INTEGER ] , market_cap [ REAL ] , price [ REAL ] , open [ REAL ] , high [ REAL ] , low [ REAL ] , close [ REAL ] , time_high [ TEXT ] , time_low [ TEXT ] , volume_24h [ REAL ] , percent_change_1h [ REAL ] , percent_change_24h [ REAL ] , percent_change_7d [ REAL ] , circulating_supply [ REAL ] , total_supply [ REAL ] , max_supply [ REAL ] , num_market_pairs [ INTEGER ] |
-- -- What is the name of the coin that creates the most total value in the past 24 hours?

SELECT T1.name FROM coins AS T1 INNER JOIN historical AS T2 ON T1.id = T2.coin_id WHERE T2.volume_24h = ( SELECT MAX(volume_24h) FROM historical );