I'd read this article Increasing the length of the NodeAlias and applied it when our Kentico instance was 8.0 or so (it's now been hotfixed to the latest 8.2.48). With more content added in, we're discovering that there is another field that we need to extend the length of: DocumentLastVersionName - nvarchar(100). However, the article's sql script to regenerate the views no longer work for 8.2.48. Can 8.2.48 scripts be made available?
Or is there a way around this problem aside from having the document name truncated?