update t_er_planebill set fbillno = fordernum where fbillno = ' ';
update t_er_hotelbill set fbillno = fordernum where fbillno = ' ';
update t_er_trainbill set fbillno = fordernum where fbillno = ' ';
update t_er_vehiclebill set fbillno = fordernum where fbillno = ' ';
update t_er_allorderbill set fbillno = fordernum where fbillno = ' ';
update t_er_planecheckingbill set fbillno = fordernum where fbillno = ' ';
update t_er_hotelcheckingbill set fbillno = fordernum where fbillno = ' ';
update t_er_traincheckingbill set fbillno = fordernum where fbillno = ' ';
update t_er_vehiclecheckingbill set fbillno = fordernum where fbillno = ' ';
update t_er_allcheckingbill set fbillno = fordernum where fbillno = ' ';