SELECT
`video_comments`.text,
`video_comments`.created_at,
`video_comments`.video_id,
`videos`.name as `video_name`,
`users`.login as `user_name`
FROM `video_comments
LEFT JOIN `videos` ON `videos`.id = `video_comments`.`video_id`
LEFT JOIN `users` ON `users`.id = `video_comments`.`user_id`
ORDER BY `video_comments`.`id` DESC LIMIT 5