19 lines
948 B
SQL
19 lines
948 B
SQL
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-- Covering partial index for per-user storage-usage accounting.
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--
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-- The usage calculation is:
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-- SELECT COALESCE(SUM(size), 0) FROM storage.files
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-- WHERE user_id = $1 AND NOT is_trashed;
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--
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-- Without an index that carries `size`, this is a heap scan over every file
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-- the user owns. This index lets PostgreSQL satisfy it with an index-only scan:
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-- * keyed by user_id → only the target user's rows are visited
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-- * INCLUDE (size) → the sum is read straight from the index
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-- * WHERE NOT is_trashed → matches the query predicate exactly and keeps
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-- the index small (trashed files are excluded)
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--
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-- Used by the per-upload usage update and the periodic background
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-- reconciliation sweep (GET /api/auth/me no longer recomputes usage inline).
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CREATE INDEX IF NOT EXISTS idx_files_user_size_active
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ON storage.files (user_id) INCLUDE (size)
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WHERE NOT is_trashed;
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