是因为增量更新的sql语句写错了，正确的应该是：

select buy_client_order_id, buy_order_id, buy_owner_id, exec_type, makeup, price, qty, sell_client_order_id, sell_order_id, sell_owner_id, side, symbol, time, DATE_FORMAT(FROM_UNIXTIME(`time`), '%Y-%m-%d %H:%i:%s') as "createdTime" from market_data.trades where time>0 and makeup is null and time > unix_timestamp(str_to_date('​上次更新时间​', '%Y-%m-%d %H:%i:%s'))