function page()
	{
		$this->load->library('pagination');
		$num = $this->db->count_all('table2');
		$config['base_url'] = 'http://localhost/codeigniter/code/query/paging';
		$config['total_rows'] = $num;
		$config['per_page'] = '20'; 
		$this->pagination->initialize($config); 
		echo $num;
		echo $this->pagination->create_links();
	}