WHERE id IN（1,2,3,4）を使用して均等な分布を取得するにはどうすればよいですか？

行番号whit変数を設定し、その結果をフィルタリングして、行1〜3のみが機能するように表示します

SET @last_objectId = 0;
SET @count_objectId = 0;
SELECT id, name, image FROM (
SELECT
 user.id,
 user.name,
 user.image,
 @count_objectId := IF(@last_objectId = rating.objectId, @count_objectId, 0) + 1 AS rating_row_number,
 @last_objectId := rating.objectId
FROM users
LEFT JOIN ratings ON (ratings.userid = user.id)
WHERE
 rating.rating > 0 AND
 rating.objectId IN (1,2,3,4)
ORDER BY rating.objectId
) AS subquery WHERE rating_row_number <= 3;