Push products at the top of the results

in , 
// **********************************************************************// 
// push products at the top of the results
// **********************************************************************// 

function my_searchwp_weight_mods( $sql ) {

	global $wpdb;

	$additional_weight = 1000;
	$cpt = 'product';
	$sql .= " + ( IF( {$wpdb->prefix}posts.post_type='{$cpt}', {$additional_weight}, 0 ) )";

	return $sql;
}
add_filter( 'searchwp_weight_mods', 'my_searchwp_weight_mods' );