login_session_id, user_id, created_date, ci_cession_id, user_agent_string

$this->db->select('login_session_id, user_id, created_date, ci_cession_id, user_agent_string');
 $this->db->from("table_name");
 $this->db->order_by("created_date", "desc");
 $query = $this->db->get();
 return $query->result();