1ad2565af1
- 019: ALTER listings (windows_view_type, wcs counts, ceiling_height,
repair_type, views, living_area, bedrooms, balconies, loggias,
description_minhash, cadastral_number, phones, bargain_allowed,
sale_type, house_source/ext_id, metro_stations)
- 020: ALTER houses (BTI: series_name, entrances, flat_count, is_emergency,
heat/gas/overlap types; Cian: cian_internal_house_id,
management_company_id, transport_accessibility_rate,
advantages/banks/builders/houses_by_turn jsonb + GIN indexes)
- 021: CREATE management_companies + FK to houses.management_company_id
- 022: CREATE agents table + agent_id_fk on listings
- 023: CREATE offer_price_history (per-listing price change timeline)
- 024: CREATE houses_price_dynamics (monthly price/sqm series)
- 025: CREATE house_reliability_checks (наш.дом.рф checks)
- 026: CREATE external_valuations (unified Avito IMV + Cian Valuation cache)
- 027: CREATE EXTENSION pgcrypto + cian_session_cookies (encrypted)
- 028: CREATE house_sources, listing_sources, house_address_aliases
+ address_fingerprint/canonical/merged_into alters
Refs: decisions/CianScraper_v1_Implementation_Plan.md Stage 1
decisions/Schema_Cian_SERP_Inventory.md sec 16, 20.3, 26
decisions/Cross_Source_Matching_Strategy.md sec 2
46 lines
1.9 KiB
PL/PgSQL
46 lines
1.9 KiB
PL/PgSQL
-- 026_external_valuations.sql
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-- Purpose: Unified cache for external valuation APIs — Avito IMV and Cian Valuation Calculator.
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-- Replaces/supersedes avito_imv_evaluations (018) for multi-source use.
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-- 018 table kept for backward compat; new code writes here.
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-- Dependencies:
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-- - None (standalone cache table)
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-- Deploy order: Apply after 025.
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--
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-- Sources: Schema_Cian_SERP_Inventory sec 26.3 (external_valuations DDL)
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-- CianScraper_v1_Implementation_Plan Stage 1
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BEGIN;
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CREATE TABLE IF NOT EXISTS external_valuations (
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id bigserial PRIMARY KEY,
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source text NOT NULL, -- 'avito_imv' / 'cian_valuation'
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cache_key text NOT NULL, -- sha256(address+area+rooms+floor+repair+deal)
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-- Input snapshot
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address text,
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total_area numeric(8,2),
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rooms_count int,
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floor int,
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total_floors int,
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repair_type text, -- without/cosmetic/euro/design
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deal_type text, -- sale/rent
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-- Output
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price_rub numeric, -- primary estimate price
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accuracy numeric, -- accuracy % (Cian-specific; 0-100)
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raw_payload jsonb, -- full API response
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chart jsonb, -- [{date, price}, ...] monthly points
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-- Cache TTL
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fetched_at timestamptz NOT NULL DEFAULT NOW(),
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expires_at timestamptz NOT NULL, -- fetched_at + 24h typically
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UNIQUE (source, cache_key)
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);
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-- Cache lookup: valid entries only
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CREATE INDEX IF NOT EXISTS ev_source_expires_idx
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ON external_valuations (source, expires_at DESC);
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-- Address-based lookup (for analytics / dedup)
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CREATE INDEX IF NOT EXISTS ev_address_idx
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ON external_valuations (address)
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WHERE address IS NOT NULL;
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COMMIT;
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