I'm curious if there are any open-source tools so an SVN server (such as VisualSVN) can be configured to maintain the comment log in an SQL database (such as MySQL).
I'm only interested in storing the repository name, revision number, and associated user comment for every commit. Ideally I would like the comment log to be maintained automatically, so any changes to the database and/or the SVN repository are synchronized (assuming that all changes are legal in both contexts).
As a first order approach one could write a post-commit script to store the commit comment into the SQL database, but I am looking for more than that.
It seems to me that this question is now obsolete. Modern VisualSVN Server versions have a modern repository web interface and it supports viewing revision logs.
Try it on the demo server at https://demo-server.visualsvn.com/!/#asf/history.