a.uuid AS "uuid", a.symbol AS "symbol", a.base_currency AS "baseCurrency", a.quote_currency AS "quoteCurrency", a.price_precision AS "pricePrecision", a.state AS "state", a.leverage_ratio AS "leverageRatio" SELECT FROM t_symbols a WHERE a.uuid = #{id} and a.del_flag = 0 SELECT FROM t_symbols a ${ew.customSqlSegment}