bbgo_origin/migrations/mysql/20200819054742_trade_index.sql

-- +up
CREATE INDEX trades_symbol ON trades(symbol);
CREATE INDEX trades_symbol_fee_currency ON trades(symbol, fee_currency, traded_at);
CREATE INDEX trades_traded_at_symbol ON trades(traded_at, symbol);

-- +down
DROP INDEX trades_symbol ON trades;
DROP INDEX trades_symbol_fee_currency ON trades;
DROP INDEX trades_traded_at_symbol ON trades;