private static function _get_table_where(string $table): ?string
  {
    if (
      bbn\str::check_name($table) &&
      ($db = self::_get_db()) &&
      ($databases_obj = self::_get_databases()) &&
      ($model = $databases_obj->modelize($table))
    ){
      $col = $db->escape('col');
      $where_ar = [];
      foreach ( $model['fields'] as $k => $f ){
        if ( !empty($f['id_option']) ){
          $where_ar[] = $col.' = UNHEX("'.$db->escape_value($f['id_option']).'")';
        }
      }
      if ( \count($where_ar) ){
        return implode(' OR ', $where_ar);
      }
    }
    return null;
  }