I put quite an effort into an answer to a question that was not very clear. Also helped him to clarify and simplify. I think I even answered it for the most part and added information on why and how. Nobody else even tried. That's why the author could still delete his question.
That's what he did today: withdraw his question, and posted a new version. The new version is clearer, he picked up a couple of my points and added more information. He is new to the site, so I do not assume any evil intent, he just wasn't sure how to do this.
Well, I am still rather new myself. So I wonder: is there a way to get to my deleted answer. All the work that has gone into it .. and it should cover most of what is needed for the question. I have studied a couple of similar posts, but there does not seem to be a way for a low-privilege user.
I think everybody should be able to see their own questions, answers and comments. Especially if there was nothing wrong with them to begin with! When postings get deleted, they should be moved to a private area of the author. Maybe with the exception of offensive stuff and spam.
The new question:
https://stackoverflow.com/questions/7492396/how-to-group-sub-queries
The removed question:
https://stackoverflow.com/questions/7478729/how-to-group-multiple-queries-by-similar-columns/7479053