A list of users that have duplicate accounts on site, based on the EmailHash and lots of reputation is riding on it
Q&A for peer programmer code reviews
-- Users with more than one duplicate account and a more that 1000 reputation in aggregate -- A list of users that have duplicate accounts on site, based on the EmailHash and lots of reputation is riding on it SELECT u1.EmailHash, Count(u1.Id) AS Accounts, ( SELECT Cast(u2.Id AS varchar) + ' (' + u2.DisplayName + ' ' + Cast(u2.reputation as varchar) + '), ' FROM Users u2 WHERE u2.EmailHash = u1.EmailHash order by u2.Reputation desc FOR XML PATH ('')) AS IdsAndNames FROM Users u1 WHERE u1.EmailHash IS NOT NULL and (select sum(u3.Reputation) from Users u3 where u3.EmailHash = u1.EmailHash) > 1000 and (select count(*) from Users u3 where u3.EmailHash = u1.EmailHash and Reputation > 10) > 1 GROUP BY u1.EmailHash HAVING Count(u1.Id) > 1 ORDER BY Accounts DESC