FileHashTable::getLastKey

static function getLastKey($bucketId)
{
	$bucketId = intval($bucketId);
	$connection = BitrixMainApplication::getConnection();
	$sql = 'SELECT max(FILE_PATH) LAST_KEY from ' . static::getTableName() . ' WHERE BUCKET_ID=' . $bucketId;
	$last = $connection->query($sql)->fetch();
	return $last && $last['LAST_KEY'] ? $last['LAST_KEY'] : '';
}