php - call the ' id ' of the mysql database with varchar format but Unknown column 'GE' in 'where clause' -

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i tried call data 'id' format id example id = ge-dis-001 join table codeigniter , result of "unknown column ' ge ' in 'where clause ' what's wrong ??

controller :

    public function detail(){      $id = $this->uri->segment(4);     $detail = $this->mcrud->get_detail($id);       $data = array(                 'detail'=>$detail,                 'lihat' =>$this->mcrud->lihat_komentar($id),                 'isi'       =>'instrument/read_views');     $this->load->view('layout/wrapper', $data);      }     

model :

    public function get_detail($id){      $sql = "select * tbdetail              join tbkalibrasi on tbkalibrasi.id = tbdetail.id             join tbsupplier on tbsupplier.namasupplier = tbdetail.namasupplier              tbdetail.id = {$id}             ";     return $this->db->query($sql)->result_array();     }    

it seems $id variable contains string spaces, getting error. change to

public function get_detail($id){      $sql = "select * tbdetail              join tbkalibrasi on tbkalibrasi.id = tbdetail.id             join tbsupplier on tbsupplier.namasupplier = tbdetail.namasupplier              tbdetail.id = '$id'             ";     return $this->db->query($sql)->result_array();     }