ALTER TABLE artists ADD COLUMN qobuz_id INTEGER DEFAULT NULL; ALTER TABLE albums ADD COLUMN qobuz_id INTEGER DEFAULT NULL; ALTER TABLE tracks ADD COLUMN qobuz_id INTEGER DEFAULT NULL; DROP INDEX IF EXISTS ux_tracks_file; DELETE FROM tracks WHERE rowid NOT IN ( SELECT MIN(rowid) FROM tracks GROUP BY ifnull(`file`, ''), `album_id`, `title`, `duration`, `number`, ifnull(`format`, ''), `source`, ifnull(`tidal_id`, 0), ifnull(`qobuz_id`, 0) ); CREATE UNIQUE INDEX ux_tracks_file ON tracks( ifnull(`file`, ''), `album_id`, `title`, `duration`, `number`, ifnull(`format`, ''), `source`, ifnull(`tidal_id`, 0), ifnull(`qobuz_id`, 0) );