How do I list classes with a SQL query on OrientDB?

On orientdb documentation I found a command like LIST CLASSES or CLASSES that returns a list of current classes in the database --> orientdb> LIST CLASSES CLASSES -------------+------+-------------+----------- NAME | ID | CLUSTERS | ELEMENTS -------------+------+-------------+----------- Person | 0 | person | 7 Animal | 1 | animal | 5 AnimalRace | 2 | AnimalRace | 0 AnimalType | 3 | AnimalType | 1 OrderItem | 4 | OrderItem | 0 Order | 5 | Order | 0 City | 6 | City | 3 -------------+------+-------------+----------- TOTAL 16 ----------------------------------------------- . I am trying to load all database with select * from V and later trying to filter all results by @class, but I don't think this is a good idea when the database gets big... Is there a way to get the same result with a SQL query?