instruction: Top answerers for a particular tag with score/answer ratio.
response: SELECT A.OwnerUserId, 'users'."displayname", SUM(A.Score) AS "total_score", COUNT(*) AS "number_of_answers", CAST(SUM(A.Score) AS FLOAT(38, 2)) / COUNT(*) AS "score_per_answer" FROM Posts AS A INNER JOIN Posts AS B ON A.ParentId = B.Id INNER JOIN Users ON A.OwnerUserId = 'users'."id" WHERE STR_POSITION(B.Tags, '<' + @TagName + '>') > 0 GROUP BY A.OwnerUserId, 'users'."displayname" ORDER BY 'total_score' DESC, 'number_of_answers' DESC LIMIT 1000