How to insert mysql query to CodeIgniter?

[eluser]Nica[/eluser]
hello,

Need your help, just want to ask how can I insert my mysql query to the codeigniter..?
This is my sample program for model.

Code:

<?
class Sales_model extends Model {

function Sales_model()
{
  parent::Model();
}

function restaurant_master_getall()
{
  $this->load->database();
  $query = $this->db->get('restaurant_master');
  return $query->result();
}

function restaurant_master_get(){
  $this->load->database();
  $query = $this->db->query();
  return $query->row_array();
}
}
?>

Thanks in advanced, have a great day ahead!