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"Play this artist" awaited `GetAlbumTracks` inside a for loop — 13 sequential round trips for a 12-album artist — and every one of the four sites doing that asked for whole track rows to read `FilePath` off them. Five genres cost 6 MB across the IPC. `GetFilePathsByAlbums(ids, libraryID)` and `GetFilePathsByGenres(names, libraryID)` answer once and carry only the paths. Measured at 50 000 tracks: an artist 13 calls / 74.2 kB -> 2 / 19.2 kB, twenty albums 20 / 117.5 kB / 7.8 ms -> 1 / 26.0 kB / 1.7 ms, five genres 5 / 6 014 kB / 213 ms -> 1 / 1 291 kB / 32.6 ms, with the returned path lists identical. They return the paths grouped by album id or genre name rather than flattened, because the caller owns the order — an album list is sorted by name, not by id, and a flattened result would silently reorder a queue — and because the album drag cache stores them per album. A libraryID of 0 means "every library", matching an unset filter.
151 lines
4.4 KiB
SQL
151 lines
4.4 KiB
SQL
-- name: UpsertGenre :one
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INSERT INTO genres (name) VALUES (?)
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ON CONFLICT(name) DO UPDATE SET name = name
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RETURNING *;
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-- name: CreateRecordingGenre :exec
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INSERT OR IGNORE INTO recording_genres (recording_id, genre_id)
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VALUES (?, ?);
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-- name: DeleteRecordingGenres :exec
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DELETE FROM recording_genres
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WHERE recording_id = ?;
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-- name: GetGenresByRecordingID :many
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SELECT g.*
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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WHERE rg.recording_id = ?;
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-- name: DeleteAllRecordingGenres :exec
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DELETE FROM recording_genres;
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-- name: DeleteAllGenres :exec
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DELETE FROM genres;
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-- name: GetTracksByGenre :many
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SELECT
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af.file_path,
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af.length_milliseconds,
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COALESCE(r.name, '') AS title,
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COALESCE(ac.text, '') AS artist_name,
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r.track_number,
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r.disc_number,
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COALESCE(rlg.name, '') AS album,
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CAST(COALESCE(
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(SELECT GROUP_CONCAT(g2.name, '||')
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FROM recording_genres rg2
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JOIN genres g2 ON rg2.genre_id = g2.id
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WHERE rg2.recording_id = r.id),
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''
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) AS TEXT) AS genre,
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COALESCE(r.year, 0) AS year,
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COALESCE(r.composer, '') AS composer,
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COALESCE(ft.extension, '') AS file_type,
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af.sample_rate,
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af.bit_depth,
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af.channels,
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af.bitrate,
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af.file_size
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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JOIN recordings r ON rg.recording_id = r.id
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JOIN audio_files af ON af.recording_id = r.id
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JOIN artist_credit ac ON r.artist_credit_id = ac.id
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LEFT JOIN (
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SELECT recording_id,
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MIN(release_group_id) AS release_group_id
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FROM release_group_recordings
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GROUP BY recording_id
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) rgr ON r.id = rgr.recording_id
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LEFT JOIN release_groups rlg ON rgr.release_group_id = rlg.id
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LEFT JOIN file_types ft ON af.file_type_id = ft.id
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WHERE g.name = ?
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ORDER BY r.name;
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-- name: GetTracksByGenreByLibrary :many
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SELECT
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af.file_path,
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af.length_milliseconds,
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COALESCE(r.name, '') AS title,
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COALESCE(ac.text, '') AS artist_name,
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r.track_number,
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r.disc_number,
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COALESCE(rlg.name, '') AS album,
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CAST(COALESCE(
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(SELECT GROUP_CONCAT(g2.name, '||')
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FROM recording_genres rg2
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JOIN genres g2 ON rg2.genre_id = g2.id
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WHERE rg2.recording_id = r.id),
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''
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) AS TEXT) AS genre,
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COALESCE(r.year, 0) AS year,
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COALESCE(r.composer, '') AS composer,
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COALESCE(ft.extension, '') AS file_type,
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af.sample_rate,
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af.bit_depth,
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af.channels,
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af.bitrate,
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af.file_size
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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JOIN recordings r ON rg.recording_id = r.id
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JOIN audio_files af ON af.recording_id = r.id
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JOIN artist_credit ac ON r.artist_credit_id = ac.id
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LEFT JOIN (
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SELECT recording_id,
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MIN(release_group_id) AS release_group_id
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FROM release_group_recordings
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GROUP BY recording_id
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) rgr ON r.id = rgr.recording_id
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LEFT JOIN release_groups rlg ON rgr.release_group_id = rlg.id
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LEFT JOIN file_types ft ON af.file_type_id = ft.id
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WHERE g.name = ? AND af.library_id = ?
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ORDER BY r.name;
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-- name: CountGenreReferences :one
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SELECT COUNT(*) FROM recording_genres WHERE genre_id = ?;
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-- name: DeleteGenre :exec
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DELETE FROM genres WHERE id = ?;
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-- name: GetAllGenresWithCounts :many
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SELECT g.name, COUNT(rg.recording_id) AS track_count
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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GROUP BY g.id, g.name
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ORDER BY g.name;
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-- name: GetAllGenresWithCountsByLibrary :many
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SELECT g.name, COUNT(rg.recording_id) AS track_count
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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JOIN recordings r ON rg.recording_id = r.id
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JOIN audio_files af ON af.recording_id = r.id
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WHERE af.library_id = ?
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GROUP BY g.id, g.name
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ORDER BY g.name;
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-- Same as GetFilePathsByReleaseGroups, for "play these genres" (perf.m2):
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-- one query instead of one per genre, and file paths instead of whole
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-- track rows, which was 6 MB over the IPC for five genres.
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-- name: GetFilePathsByGenres :many
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SELECT g.name AS genre_name, af.file_path
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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JOIN recordings r ON rg.recording_id = r.id
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JOIN audio_files af ON af.recording_id = r.id
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WHERE g.name IN (sqlc.slice('genre_names'))
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ORDER BY r.name;
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-- name: GetFilePathsByGenresByLibrary :many
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SELECT g.name AS genre_name, af.file_path
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FROM genres g
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JOIN recording_genres rg ON g.id = rg.genre_id
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JOIN recordings r ON rg.recording_id = r.id
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JOIN audio_files af ON af.recording_id = r.id
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WHERE g.name IN (sqlc.slice('genre_names'))
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AND af.library_id = ?
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ORDER BY r.name;
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