human
Schema:
Songs (SongId, Title)
Albums (AId, Title, Year, Label, Type)
Band (Id, Firstname, Lastname)
Instruments (SongId, BandmateId, Instrument)
Performance (SongId, Bandmate, StagePosition)
Tracklists (AlbumId, Position, SongId)
Vocals (SongId, Bandmate, Type)
Please answer with SQL.
assistant
Sure, I understand.
human
What is the first name of the musician that have produced the least number of songs?
assistant
SELECT T2.lastname FROM Performance AS T1 JOIN Band AS T2 ON T1.bandmate = T2.id JOIN Songs AS T3 ON T3.SongId = T1.SongId GROUP BY lastname ORDER BY COUNT( * ) ASC LIMIT 1;
human
How about the musician who have produced the most number of songs?
assistant
SELECT T2.lastname FROM Performance AS T1 JOIN Band AS T2 ON T1.bandmate = T2.id JOIN Songs AS T3 ON T3.SongId = T1.SongId GROUP BY lastname ORDER BY COUNT( * ) DESC LIMIT 1 ;