fix(obj-2): trim migration 116 to GIST index only — INSERT CTE timed out in deploy (#326)

data/sql/116_obj2_multi_feature_matcher.sql

@@ -1,96 +1,15 @@
--- 116_obj2_multi_feature_matcher.sql
+-- 116_obj2_multi_feature_matcher.sql  (HOTFIX — INSERT step deferred)
--- Issue #307 OBJ-2: backfill objective_complex_mapping via multi-feature scoring
+-- Issue #307 OBJ-2.
--- (name_sim 60% + dev_match 25% + district_match 15%).
 --
--- Adds trgm gist index on objective_lots.project_name FIRST so the LATERAL
+-- Original version did INSERT through a 89M-cost CROSS JOIN LATERAL CTE that
--- similarity() probe runs as bitmap index scan instead of seq-scan-per-row.
+-- timed out during deploy. Hotfix keeps только the GIST trgm index (this is
+-- the load-bearing change for downstream queries — competitors fuzzy match,
+-- objective_complex_mapping reverse matching).
 --
--- Inserts auto-accepted matches at composite >= 0.75 with match_method='multi_feature_v1'.
+-- Actual multi-feature INSERT was already done inline on 2026-05-17
--- ON CONFLICT (objective_complex_name, objective_group) DO NOTHING — idempotent.
+-- (+13 mappings: 129 → 142). Remaining auto-accept candidates (~50-100 at
--- REFRESH mv_layout_velocity CONCURRENTLY at the end so Site Finder sees new mappings.
+-- composite >= 0.75) will be applied via separate migration 117 after
---
+-- the candidate query is pre-materialized to avoid full LATERAL scan.
--- Verification (run after COMMIT, outside migration):
---   SELECT COUNT(*) FROM objective_complex_mapping;                       -- expect 200+
---   SELECT * FROM objective_complex_mapping WHERE domrf_obj_id=64701;     -- Малевич still mapped
---   SELECT match_method, COUNT(*) FROM objective_complex_mapping GROUP BY 1;
 
--- The pg_trgm extension is already installed (used by existing migrations 99/103/104).
-
--- ── Step 1: GIST index for trgm similarity probes ───────────────────────────
--- IF NOT EXISTS keeps migration idempotent.
 CREATE INDEX IF NOT EXISTS objective_lots_project_name_trgm_idx
     ON objective_lots USING gist (project_name gist_trgm_ops);
-
--- ── Step 2: composite-score backfill ────────────────────────────────────────
-BEGIN;
-
-WITH unmapped_domrf AS (
-    SELECT o.obj_id, o.comm_name, o.dev_name, o.district_name
-      FROM domrf_kn_objects o
-     WHERE o.is_ekb = true
-       AND o.comm_name IS NOT NULL
-       AND NOT EXISTS (
-           SELECT 1 FROM objective_complex_mapping m WHERE m.domrf_obj_id = o.obj_id
-       )
-),
-unmapped_obj AS (
-    SELECT DISTINCT project_name, developer, district
-      FROM objective_lots
-     WHERE project_name IS NOT NULL
-       AND project_name NOT IN (
-           SELECT objective_complex_name FROM objective_complex_mapping
-       )
-),
-pair_scores AS (
-    SELECT
-        d.obj_id,
-        o.project_name,
-        similarity(d.comm_name, o.project_name)                              AS name_sim,
-        (regexp_replace(lower(coalesce(d.dev_name, '')),  '[^а-яa-z0-9]', '', 'g')
-         = regexp_replace(lower(coalesce(o.developer, '')), '[^а-яa-z0-9]', '', 'g')
-        )::int                                                                AS dev_match,
-        (
-            coalesce(d.district_name, '') ILIKE '%' || coalesce(o.district, '') || '%'
-         OR coalesce(o.district, '')      ILIKE '%' || coalesce(d.district_name, '') || '%'
-        )::int                                                                AS district_match
-      FROM unmapped_domrf d
-      CROSS JOIN LATERAL (
-          SELECT u.project_name, u.developer, u.district
-            FROM unmapped_obj u
-           WHERE similarity(d.comm_name, u.project_name) > 0.3
-           ORDER BY similarity(d.comm_name, u.project_name) DESC
-           LIMIT 3
-      ) o
-),
-ranked AS (
-    SELECT
-        obj_id, project_name, name_sim, dev_match, district_match,
-        (name_sim * 0.6 + dev_match * 0.25 + district_match * 0.15)         AS composite,
-        ROW_NUMBER() OVER (
-            PARTITION BY obj_id
-            ORDER BY (name_sim * 0.6 + dev_match * 0.25 + district_match * 0.15) DESC,
-                     name_sim DESC
-        )                                                                    AS rn
-      FROM pair_scores
-)
-INSERT INTO objective_complex_mapping
-    (objective_complex_name, domrf_obj_id, objective_group,
-     match_method, match_score, is_reviewed, note)
-SELECT
-    r.project_name,
-    r.obj_id,
-    'Екатеринбург',
-    'multi_feature_v1',
-    r.composite,
-    false,
-    'OBJ-2 multi-feature 2026-05-17 (name 0.6 + dev 0.25 + district 0.15)'
-  FROM ranked r
- WHERE r.rn = 1
-   AND r.composite >= 0.75
-ON CONFLICT (objective_complex_name, objective_group) DO NOTHING;
-
-COMMIT;
-
--- ── Step 3: REFRESH MV so Site Finder uses new mappings ─────────────────────
--- CONCURRENTLY requires the MV to not be in a tx; run outside BEGIN/COMMIT.
-REFRESH MATERIALIZED VIEW CONCURRENTLY mv_layout_velocity;