To find the volume of Ethereum trades on the dex.trades table in the last 24 hours on DuneAnalytics V2, you can use the following query:
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`SELECT SUM(volume) FROM dex.trades WHERE block_timestamp >= current_timestamp - interval '1 day' AND base_asset_symbol = 'ETH'`
This query selects the sum of the `volume` column from the `dex.trades` table, filtered to only include rows where the `block_timestamp` is within the past 24 hours (using the `current_timestamp - interval '1 day'` expression) and the `base_asset_symbol` is 'ETH'. This will give you the total volume of Ethereum trades in the specified time period.
I hope this helps! Let me know if you have any questions.