Found old module - https://drupal.org/project/xmlsitemap_aliases, it has written something interesting in its description
If you have aliases for your missing pages, this module can include them for you. Anything with a path in the aliases table can now be included in your XML sitemap by the click of a button! (This is particularly useful when you have too many to enter manually as custom links, for example: views with arguments!)
Does that mean, that if I have for example a view (table) with sortable columns - they are added as separate pages or as the alias to the main one? I do not quite get this. Or is it even useful?
Is this feature in the roadmap? Thank you