72 lines
3.1 KiB
PL/PgSQL
72 lines
3.1 KiB
PL/PgSQL
-- 009_houses.sql
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-- CREATE TABLE houses — multi-source house cache (Avito / CIAN / etc.)
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--
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-- Dependencies: 002_core_tables.sql (listings_set_geom function must exist)
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-- Apply after: 008_crm_fields.sql
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-- Apply before: 010_houses_alter.sql, 011_listings_alter.sql
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--
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-- Source: decisions/Schema_Avito_Houses_Listings_History.md sec 4.2
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--
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-- Идемпотентно: безопасно запускать повторно.
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BEGIN;
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CREATE TABLE IF NOT EXISTS houses (
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id bigserial PRIMARY KEY,
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source text NOT NULL, -- 'avito' / 'cian' / ...
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ext_house_id text NOT NULL, -- Avito's house ID e.g. '3171365'
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-- Identity
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url text NOT NULL, -- /catalog/houses/<slug>/<id>
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slug text, -- ul_akademika_postovskogo_17a
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-- Geo (точные coords из developmentData.coords)
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address text,
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lat double precision,
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lon double precision,
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geom geometry(Point, 4326), -- PostGIS для ST_DWithin
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-- Метаданные дома
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year_built int,
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house_type text, -- panel/brick/monolith/monolith_brick/other
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house_class text, -- comfort/business/premium/economy
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total_floors int,
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total_units int, -- кол-во квартир/апартаментов
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-- Лифты + удобства (из detail page / houses catalog developmentData)
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passenger_elevators int,
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cargo_elevators int,
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has_concierge boolean,
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closed_yard boolean,
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-- Рейтинг
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rating numeric(2,1), -- 4.8 (1 decimal)
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reviews_count int, -- кол-во отзывов
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-- Pin'ы соседних домов (для map preview) — JSONB
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map_pins jsonb DEFAULT '[]'::jsonb, -- [{lat, lng, type}, ...]
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-- Lifecycle
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raw_payload jsonb,
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first_seen_at timestamptz NOT NULL DEFAULT NOW(),
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last_scraped_at timestamptz NOT NULL DEFAULT NOW(),
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UNIQUE (source, ext_house_id)
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);
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-- Spatial index (обязателен для ST_Intersects/ST_DWithin)
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CREATE INDEX IF NOT EXISTS houses_geom_idx ON houses USING GIST (geom);
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CREATE INDEX IF NOT EXISTS houses_source_ext_idx ON houses (source, ext_house_id);
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CREATE INDEX IF NOT EXISTS houses_last_scrape_idx ON houses (last_scraped_at DESC);
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-- Trigger: auto-set geom из lat/lon (reuse listings_set_geom из 002_core_tables.sql)
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DROP TRIGGER IF EXISTS houses_set_geom_trg ON houses;
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CREATE TRIGGER houses_set_geom_trg
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BEFORE INSERT OR UPDATE OF lat, lon ON houses
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FOR EACH ROW EXECUTE FUNCTION listings_set_geom();
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COMMENT ON TABLE houses IS
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'Кэш домов из Houses Catalog endpoint. 1 запись на (source, ext_house_id). '
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'Re-scrape если last_scraped_at > 30 дней. Geo через listings_set_geom trigger.';
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COMMIT;
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