instruction: Singapore Top User with Python tag.
response: SELECT ROW_NUMBER() OVER (ORDER BY u.Reputation DESC) AS "#", u.Id AS "user_link", u.Reputation FROM Users AS u INNER JOIN Posts AS p ON p.OwnerUserId = u.Id INNER JOIN PostTags AS pt ON pt.PostId = p.Id INNER JOIN Tags AS t ON t.Id = pt.TagId WHERE LOWER(u.Location) LIKE '%singapore%' OR UPPER(u.Location) LIKE '%SG' AND t.TagName = 'python' GROUP BY u.Reputation, u.Id ORDER BY Reputation DESC