$this->db->set('field', 'field+1', FALSE);$this->db->where('id', 2);$this->db->update('mytable');
$data = array( array( 'id' => 'ID' , 'field' => 'field+1' , //False? 'points' => 'points+1' //False? ), array( 'id' => 'ID' , 'field' => 'field+1' , //False? 'points' => 'points+1' //False? ),);$this->db->update_batch('mytable', $data, 'id');