Album duration possible?

[entdgc]

Are you trying (and succeeding to make a fool of me)?
In this case my excuse is that I did read these words but they did not make sense to me. I clearly do not have the depth of knowledge of tagging that you do so do not know what MUSICBRAINZ_ALBUMID etc is. Just for completeness for later readers are you saying the code could be written like this ...

Code:

select album, artist,
       format_length_hours(sum(length_seconds)) as album_duration
  ffrom Playlist
  where playlist_index = active_playlist()

Is that the correct format? Does it need the single quotes?