Profile: webD-3

add_filter('wpv_filter_query', 'parent_has_childs_func', 101, 3);
function parent_has_childs_func($query, $view_settings, $view_id) {
    if ( $view_id == 1303 ) {
        global $wpdb;
        $ids = array();
        $metas = $wpdb->get_results( "SELECT meta_value FROM wp_postmeta WHERE meta_key = '_wpcf_belongs_county_id'");
        foreach($metas as $id) {
          if(isset($id->meta_value)) {
            $ids[] = $id->meta_value;
          }
        }
        $query['post__in'] = array_intersect($query['post__in'], $ids );
    }
    return $query;
}