Light1YT
8aec625134
Three #1953 audit follow-ups: - perf: add migration 174 — composite index idx_kn_flats_obj_snap on domrf_kn_flats (obj_id, snapshot_date DESC). Serves the #1956 flats_latest CTE in best_layouts.py (DISTINCT ON (obj_id) ORDER BY obj_id, snapshot_date DESC + self-join on (obj_id, snapshot_date)); previously only (obj_id) existed so Postgres sorted per object. Prod: 789 569 rows, idx ~5.7 MB, dry-run instant. Idempotent, self-wrapped BEGIN/COMMIT. - frontend: route every max_height_m read through coerceFloat (same string-bug class as max_far #1962). max_height_m is NUMERIC → arrives as a string on the wire; ptica-adapt.ts read it raw at 4 sites and relied on formatInt/Math.round coercion. Widen the type in nspd.ts and fix the stale "real number" comment in nspd-regulation.ts. - frontend: hide the «Дата регистрации» EGRN row entirely when registration_date is null (~97% of parcels) instead of rendering a bare «—».
35 lines
1.5 KiB
PL/PgSQL
35 lines
1.5 KiB
PL/PgSQL
-- 174_domrf_kn_flats_obj_snapshot_idx.sql
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--
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-- Composite index on domrf_kn_flats (obj_id, snapshot_date DESC).
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--
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-- Serves the `flats_latest` CTE in best_layouts.py (#1956 supply batch query,
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-- backend/app/services/site_finder/best_layouts.py:_SUPPLY_BATCH_SQL):
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--
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-- flats_latest AS (
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-- SELECT DISTINCT ON (f.obj_id) f.obj_id, f.snapshot_date
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-- FROM domrf_kn_flats f
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-- JOIN nearby n ON n.obj_id = f.obj_id
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-- ORDER BY f.obj_id, f.snapshot_date DESC, f.id DESC
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-- )
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-- ... JOIN domrf_kn_flats f ON f.obj_id = fl.obj_id
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-- AND f.snapshot_date = fl.snapshot_date
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--
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-- domrf_kn_flats is a per-object time-series (UNIQUE (obj_id, snapshot_date));
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-- the DISTINCT ON + ORDER BY obj_id, snapshot_date DESC picks each object's
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-- newest snapshot, and the self-join re-fetches that snapshot's rows by
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-- (obj_id, snapshot_date). The only existing index covering obj_id is
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-- idx_kn_flats_obj (obj_id) alone, so Postgres sorts per object on
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-- snapshot_date instead of reading it pre-ordered. A composite
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-- (obj_id, snapshot_date DESC) lets DISTINCT ON walk the index and lets the
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-- join probe by (obj_id, snapshot_date) directly.
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--
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-- Prod (2026-06-28): domrf_kn_flats = 789 569 rows; no (obj_id, snapshot_date)
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-- index present. DRY-RUN (BEGIN; CREATE INDEX; ROLLBACK) succeeded — index size
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-- ~5.7 MB, builds instantly. Idempotent: IF NOT EXISTS.
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BEGIN;
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CREATE INDEX IF NOT EXISTS idx_kn_flats_obj_snap
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ON domrf_kn_flats (obj_id, snapshot_date DESC);
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COMMIT;
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