diff-watched-all-eps.sql

select `episode`.`idEpisode`
from `tvshow`, `episode`
where 
`episode`.`idShow` = `tvshow`.`idShow` AND
`tvshow`.idShow = XX
into outfile '/tmp/alleps';

select `episode`.`idEpisode`
from `tvshow`, `episode`, `files`
where 
`episode`.`idShow` = `tvshow`.`idShow` AND
`files`.`idFile` = `episode`.`idFile` AND
`tvshow`.idShow = XX
into outfile '/tmp/watchedeps';