boomer77uni easy
    Updated 2021-11-11
    WITH Variance as (SELECT var_pop(price_usd) as Variance, currency as Currency, avg(price_usd) as Avg_USD, date_trunc('day', block_timestamp) as XXX
    FROM terra.oracle_prices
    GROUP by Currency, XXX)

    SELECT * FROM Variance
    WHERE Currency != 'ANC' and Currency != 'MIR' and Currency != 'uluna'
    AND XXX BETWEEN '2021-01-01' AND '2021-06-01'

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