USE DoctorWho
SELECT AuthorName, Title, tblDoctor.DoctorName, tblEnemy.EnemyName, LEN(tblAuthor.AuthorName + Title + DoctorName + EnemyName) AS Length
FROM tblAuthor INNER JOIN
tblEpisode ON tblAuthor.AuthorId = tblEpisode.AuthorId
INNER JOIN tblDoctor ON tblEpisode.DoctorId = tblDoctor.DoctorId
CROSS JOIN tblEnemy
WHERE LEN(tblAuthor.AuthorName + Title + DoctorName + EnemyName) < 40