human
Schema:
genre (g_name, rating, most_popular_in)
artist (artist_name, country, gender, preferred_genre)
files (f_id, artist_name, file_size, duration, formats)
song (song_name, artist_name, country, f_id, genre_is, rating, languages, releasedate, resolution)
Please answer with SQL.
assistant
Sure, I understand.
human
what is the duration of the longest song grouped by genre?
assistant
SELECT MAX( T1.duration ) , T2.genre_is FROM files AS T1 JOIN song AS T2 ON T1.f_id = T2.f_id GROUP BY T2.genre_is ;