Aleksandr Bogomiakov
bd1d3a4ebc
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28 lines
1.1 KiB
SQL
28 lines
1.1 KiB
SQL
ALTER TABLE furumusic__track
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ADD COLUMN IF NOT EXISTS lastfm_checked_at TIMESTAMPTZ,
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ADD COLUMN IF NOT EXISTS lastfm_lookup_title TEXT,
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ADD COLUMN IF NOT EXISTS lastfm_lookup_artist TEXT;
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CREATE INDEX IF NOT EXISTS idx_track_artist_lastfm_lookup
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ON furumusic__track_artist (track_id, position, artist_id)
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WHERE role <> 'featuring';
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-- Preserve existing observations, including valid zero-valued popularity.
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-- Legacy misses cannot be backfilled because they were only written to logs.
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UPDATE furumusic__track t
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SET lastfm_checked_at = CURRENT_TIMESTAMP,
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lastfm_lookup_title = t.title::text,
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lastfm_lookup_artist = (
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SELECT a.name::text
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FROM furumusic__track_artist ta
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JOIN furumusic__artist a ON a.id = ta.artist_id
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WHERE ta.track_id = t.id AND ta.role <> 'featuring'
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ORDER BY ta.position, ta.artist_id
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LIMIT 1
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)
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WHERE t.lastfm_checked_at IS NULL
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AND (t.lastfm_updated_at IS NOT NULL
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OR t.lastfm_rating IS NOT NULL
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OR t.lastfm_listeners IS NOT NULL
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OR t.lastfm_playcount IS NOT NULL);
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