patient notification

admin/application/models/Webservice_model.php

@@ -1673,7 +1673,7 @@ class Webservice_model extends CI_Model {
 		$this->db->join('tbl_doctors','tbl_doctors.id = tbl_booking.doctor_id');
 		$this->db->join('tbl_specialization','tbl_specialization.id = tbl_doctors.specialization');
 		$this->db->limit($per_page,$start);
-		$this->db->order_by('tbl_patient_notification','DESC');
+		$this->db->order_by('tbl_patient_notification.id','DESC');
 		$query = $this->db->get_where('tbl_patient_notification',array('tbl_patient_notification.patient_id'=>$id))->result();
 		if(count($query) > 0){
 			return $query;