bbgo_origin/migrations/sqlite3/20200819054742_trade_index.sql

-- !txn
-- +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;
DROP INDEX trades_symbol_fee_currency;
DROP INDEX trades_traded_at_symbol;