41 lines
2 KiB
PL/PgSQL
41 lines
2 KiB
PL/PgSQL
-- 031_houses_alter_yandex.sql
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-- Purpose: Add Yandex Realty-specific columns to houses table (ЖК landing + valuation enrichment).
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-- Dependencies:
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-- - houses table: 009_houses.sql
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-- - 020_houses_alter_cian.sql (prior Cian columns must exist; no FK dependency, column-level only)
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-- Deploy order: Apply after 030_listings_alter_yandex.sql
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--
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-- Sources:
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-- - decisions/Schema_YandexRealty_Recon.md sec 11.2 (Newbuilding ЖК landing fields)
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-- - decisions/Schema_YandexRealty_Recon.md sec 13.1 (Yandex Valuation tool enrichment)
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-- - YandexRealtyScraper_v1_Implementation_Plan Stage 1
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--
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-- Idempotent: all ALTER TABLE uses ADD COLUMN IF NOT EXISTS; all CREATE INDEX use IF NOT EXISTS.
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BEGIN;
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ALTER TABLE houses
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-- Yandex Newbuilding (ЖК) landing
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ADD COLUMN IF NOT EXISTS yandex_jk_id text, -- '1592987'
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ADD COLUMN IF NOT EXISTS yandex_jk_slug text, -- 'tatlin'
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ADD COLUMN IF NOT EXISTS commission_year int, -- 2023
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ADD COLUMN IF NOT EXISTS commission_month text, -- 'июнь' (raw RU month)
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ADD COLUMN IF NOT EXISTS total_area_ha numeric(6,2), -- 1.50
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ADD COLUMN IF NOT EXISTS corpus_count int, -- 3 (parsed from "три башни")
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-- Yandex Valuation tool enrichment
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ADD COLUMN IF NOT EXISTS yandex_validated_at timestamptz, -- last enrichment timestamp
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ADD COLUMN IF NOT EXISTS yandex_total_listings int, -- "N объектов" в истории дома
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ADD COLUMN IF NOT EXISTS has_panorama boolean; -- Yandex Panorama 3D view available
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-- Partial index on yandex_jk_id for fast lookup by Yandex newbuilding identifier
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CREATE INDEX IF NOT EXISTS houses_yandex_jk_idx
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ON houses (yandex_jk_id)
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WHERE yandex_jk_id IS NOT NULL;
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-- Partial index on commission_year for filtering by year of commissioning
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CREATE INDEX IF NOT EXISTS houses_commission_year_idx
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ON houses (commission_year)
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WHERE commission_year IS NOT NULL;
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COMMIT;
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