Search Woocommerce products by SKU in WordPress website

//Include Woocommerce Product SKU in Search
function rp_search_products_sku($query) {
    global $wpdb;
	$search_query = get_search_query();
	if(empty($search_query)){
		return $query;
	}
	else{
		$args = array(
			'posts_per_page' => -1,
			'post_type' => 'product',
			'fields' => 'ids',
			'meta_query' => array(
				array(
					'key' => '_sku',
					'value' => $search_query,
					'compare' => 'LIKE'
				)
			)
		);
		$posts = get_posts($args);
		if(empty($posts)) {
			return $query;
		}
		else{
			$query = str_replace( 'AND (((', "AND ((({$wpdb->posts}.ID IN (" . implode( ',', $posts ) . ")) OR (", $query);
			return $query;
		}
	}
}
add_filter( 'posts_search', 'rp_search_products_sku', 999, 2 );