$sql="select tb_dupicator.*,tb_department.dep_name from tb_dupicator inner join tb_department on tb_dupicator.dep_id=tb_department.dep_id
where date_dup between '".$date1.' 00:00:00'."' and '".$date2.' 23:59:59'."'";
mysql_query("SET NAMES utf8");
$rs=mysql_query($sql);