MySQL 行数固定のデータを生成

メモ

SELECT 
    w.*
FROM 
    (SELECT @row_id := @row_id +1 as row_id, w.* FROM works w ) w
RIGHT JOIN (
    SELECT 1 row_id 
UNION ALL
    SELECT 2 row_id 
UNION ALL
    SELECT 3 row_id 
UNION ALL
    SELECT 4 row_id 
UNION ALL
    SELECT 5 row_id 
) x ON w.row_id = x.row_id;

もっといい方法があるかもしれない