Jak nevypsat sloupečky z databáze, které nechci

$query = mysql_query("SELECT COLUMN_NAME
                             FROM information_schema.columns
                             WHERE table_schema = '".$db."'
                             AND table_name = '".$table."' ");
     
     while($row = mysql_fetch_assoc($query)){ 
               $promena=$row['COLUMN_NAME'];
     
                        $skupina_A.='<th colspan="0" style="text-align:center;"><span class="format_radek">'.$promena.'</span></th>   ';
     
     
     }