instruction: self-accepted answer with negative score to a well received question.
response: SELECT p.Id AS "post_link", p.Score AS QuestionScore, a.Score AS AnswerScore FROM Posts AS p, Posts AS a WHERE p.PostTypeId = 1 AND NOT p.AcceptedAnswerId IS NULL AND a.Id = p.AcceptedAnswerId AND a.Score < 0 AND p.Score > 0 AND p.OwnerUserId = a.OwnerUserId ORDER BY p.Score - a.Score DESC