instruction: Max rep of all days ever.
response: SELECT Rep, OwnerDisplayName, OwnerUserId, dt FROM (SELECT MAX(Score) AS Rep, OwnerDisplayName, OwnerUserId, CAST(TIME_TO_STR(CreationDate, '%m/%d/%Y') AS TEXT(30)) AS dt FROM Posts GROUP BY OwnerDisplayName, OwnerUserId, CAST(TIME_TO_STR(CreationDate, '%m/%d/%Y') AS TEXT(30))) AS a ORDER BY Rep DESC LIMIT 100