Code-Snippets-Functions/Execute a function on a child site/WooCommerce/make-ship-to-column-sortable-order-list.txt

// Make existing "Ship to" column sortable on admin orders list
add_filter( "manage_edit-shop_order_sortable_columns", 'shop_order_column_meta_field_sortable' );
function shop_order_column_meta_field_sortable( $columns )
{
    $meta_key = '_shipping_address_1';
    return wp_parse_args( array('shipping_address' => $meta_key), $columns );
}

// Make "Ship to" sorting properly (by numerical values)
add_action('pre_get_posts', 'shop_order_column_meta_field_sortable_orderby' );
function shop_order_column_meta_field_sortable_orderby( $query ) {
    global $pagenow;

    // Targeting WooCommerce admin orders list only
    if ( 'edit.php' === $pagenow && isset($_GET['post_type']) && 'shop_order' === $_GET['post_type'] ){

        $orderby  = $query->get( 'orderby');
        $meta_key = '_shipping_address_1';

        if ('_shipping_address_1' === $orderby){
          $query->set('meta_key', $meta_key);
          $query->set('orderby', 'meta_value_num'); // Or using 'meta_value'
        }
    }
}