sqlstr = "select s_info_windcode STOCKCODE,TRADE_DT TRADEDATE,TURNOVER_D TURNOVER from ashareyield WHERE TRADE_DT>'20190101'"
sqlstr = "select s_info_windcode STOCKCODE,TRADE_DT TRADEDATE,TURNOVER_D TURNOVER from ashareyield WHERE TRADE_DT>'20190101'"