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create table books (
author varchar(64),
title varchar(64)
);
insert into books values
('Джордж Оруэлл', '1984'),
('Джордж Оруэлл', 'Скотный двор'),
('Олдос Хаксли', 'Время должно остановиться'),
('Олдос Хаксли', 'О дивный новый мир'),
('Джордж Оруэлл', 'Вспоминая войну в Испании');
SELECT
author,
count(*) books_count
FROM books
GROUP BY author
ORDER BY books_count DESC
;
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