--album
SELECT
	al.id as "ID",
	al.name as "Title",
	ar.name as "Artist",
	al.original_year as "Release Year",
	SUM(s.time) as "Duration"
FROM album al
JOIN artist ar ON ar.id=al.album_artist
JOIN song s ON s.album=al.id
GROUP BY al.id
INTO OUTFILE '/var/lib/mysql-files/albums.csv'
FIELDS ENCLOSED BY '"'
TERMINATED BY ';'
ESCAPED BY '"'
LINES TERMINATED BY '\r\n';

--song
SELECT
	s.id as "ID",
	s.title as "Title",
	ar.name as "Artist",
	s.time as "Duration",
	s.file as "Content"
FROM song s
JOIN artist ar ON ar.id=s.artist
INTO OUTFILE '/var/lib/mysql-files/songs.csv'
FIELDS ENCLOSED BY '"'
TERMINATED BY ';'
ESCAPED BY '"'
LINES TERMINATED BY '\r\n';

--playlist
SELECT
	p.id as "ID",
	p.name as "Name",
	s.title as "Song"
FROM playlist_data pd
JOIN playlist p ON p.id=pd.playlist
JOIN song s ON s.id=pd.object_id
INTO OUTFILE '/var/lib/mysql-files/playlists.csv'
FIELDS ENCLOSED BY '"'
TERMINATED BY ';'
ESCAPED BY '"'
LINES TERMINATED BY '\r\n';