Trying to select DINSTINCT values

[eluser]jvk22[/eluser]
I'm trying to select dinstinct values for a search function, however its selecting values with the same name more then once.

Code:

$this->db->like('domain_name',$domain_name);
  $this->db->distinct();
  $query = $this->db->get('complaints');
  return $query->result();