SELECT Id,DisplayName
FROM   Users
WHERE  Reputation > 400000;

CREATE INDEX  ix_bla on USERS (Reputation)
INCLUDE (Id, DisplayName)

CREATE UNIQUE NONCLUSTERED INDEX Users_400k_Club
 ON dbo.Users ( DisplayName, Id )
 INCLUDE ( Reputation )
 WHERE Reputation > 400000
 WITH ( DROP_EXISTING = ON );