I really like this. Bookmarked. I have spotted a few bugs that you may want to check into.

Search the page for the word “llanguage”. The sum/count checker told me it was incorrect for using lowercase nulls. I normally write all my sql lowercase for brevity, but I also mostly use sql server.

I really like what you have done here and I hesitate to report it in your show hn thread because this really is great.