get_product_id_by_sku funtion not work

I don’t know what wrong when plugin create sku. When i called get_product_id_by_sku() it’s not work.
I can get sku by get_post_meta(post_id, ‘_sku’) but get_product_id_by_sku() not work.
After a few hours investigating i found a solution.

Woocommerce has another table to get sku it’s wc_product_meta_lookup

So i run this code:

global $wpdb;

$all_ids = get_posts( array(
	'post_type' => 'product',
	'numberposts' => -1,
	'post_status' => 'publish',
	'fields' => 'ids',
) );
foreach($all_ids as $id){
	$wpdb->update( 
		$wpdb->wc_product_meta_lookup, 
		array( 
			'sku' => get_post_meta($id, '_sku', true),
		), 
		array( 'product_id' => $id)
	);
}

I hope it will help.
Thanks