65c2824507
- 030_listings_alter_yandex.sql: 7 cols (yandex_offer_id, views_total_yandex, publish_date_relative, sale_type_text, agency_name/founded_year/objects_count) + 2 partial indexes (yandex_offer_id, agency_name) - 031_houses_alter_yandex.sql: 9 cols (yandex_jk_id/slug, commission_year/month, total_area_ha, corpus_count, yandex_validated_at, yandex_total_listings, has_panorama) + 2 partial indexes (yandex_jk_id, commission_year) - 032_yandex_history.sql: enables source='yandex_valuation' on existing house_placement_history + 2 indexes (hph_source_idx, hph_house_source_idx) Foundation for YandexRealtyScraper v1 (Stages 2-9 follow on subsequent PRs). Note: numbered 030-032 because 029 was already used by PR #448 (matching/ valuation/dynamics extensions). All BEGIN/COMMIT, ADD COLUMN IF NOT EXISTS, nullable, idempotent.
31 lines
1.4 KiB
PL/PgSQL
31 lines
1.4 KiB
PL/PgSQL
-- 032_yandex_history.sql
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-- Purpose: Enable source='yandex_valuation' on existing house_placement_history table by
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-- updating the column COMMENT to document the new value and adding analytics-friendly
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-- indexes for efficient filtered queries on the new source.
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-- Dependencies: 017_house_placement_history.sql (table must already exist)
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-- Deploy order: Apply after 031_houses_alter_yandex.sql
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--
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-- Sources:
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-- - decisions/Schema_YandexRealty_Recon.md sec 12.5 + 13.2
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-- - YandexRealtyScraper_v1_Implementation_Plan Stage 1
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--
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-- Note: Idempotent — does NOT alter table schema (no ADD/DROP COLUMN).
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-- Only updates COMMENT metadata and creates indexes with IF NOT EXISTS.
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-- Safe to re-run; COMMENT ON COLUMN is always an overwrite (no-error on repeat).
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BEGIN;
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-- Update column comment to document the new source enum value
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COMMENT ON COLUMN house_placement_history.source IS
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'Source of history record: avito / avito_imv / cian / yandex_valuation';
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-- Partial index for analytics queries filtered by source (mostly yandex_valuation)
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CREATE INDEX IF NOT EXISTS hph_source_idx
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ON house_placement_history (source);
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-- Composite index for "all history for a house from a specific source"
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CREATE INDEX IF NOT EXISTS hph_house_source_idx
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ON house_placement_history (house_id, source, last_price_date DESC)
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WHERE house_id IS NOT NULL;
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COMMIT;
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