_,err:=sqlDb.Exec("delete from Purchase_Order where number = ? and data_update_time < ?",deleteKeyErp["number"],deleteKeyErp["data_update_time"]);
_,err=sqlDb.Exec("delete from Purchase_Order where number like ? and data_update_time < ?",deleteKeyErp["number"]+"-%",deleteKeyErp["data_update_time"]);