SELECT count(*) AS Ordem, T2A.Y FROM T2 AS T2A, T2 AS T2B WHERE T2A.Y >= T2B.Y GROUP BY T2A.Y ORDER BY 1

SELECT count(*) AS Ordem, T2A.Y FROM T2 AS T2A GROUP BY T2A.Y ORDER BY Z

SELECT count(*) AS Ordem, T2.Y FROM T2 AS T2A WHERE T2.Y >= T2.Y GROUP BY Y ORDER BY count(*)

SELECT Ordem, Y FROM T2 GROUP BY Ordem ORDER BY Y

SELECT Ordem, T2.Y FROM T2 AS T2A, T2 AS T2B GROUP BY T2B.Y ORDER BY T2A.Y