instruction: Strongest users on both the MathSE and PSE.
response: SELECT U1.DisplayName AS MathUserName, U1.Id AS MathUserId, U1.Reputation AS MathReputation, U2.DisplayName AS PhysicsUserName, U2.Id AS PhysicsUserId, U2.Reputation AS PhysicsReputation FROM "stackexchange.math".dbo.Users AS U1, "stackexchange.physics".dbo.Users AS U2 WHERE U1.AccountId = U2.AccountId ORDER BY CASE WHEN U1.Reputation > U2.Reputation THEN U2.Reputation ELSE U1.Reputation END DESC, U1.AccountId LIMIT 100