Exclude cancelled reservations before ARR field review

database/020_daily_cancelled_exclusion.down.sql

@@ -0,0 +1,26 @@
+-- Rollback is safe only before any cancellation-exclusion facts are committed.
+BEGIN;
+DO $$
+BEGIN
+    IF current_database() <> 'booking_test' THEN
+        RAISE EXCEPTION 'ARR migration is allowed only in booking_test';
+    END IF;
+    IF EXISTS (SELECT 1 FROM finance.daily_versions WHERE excluded_cancelled_rows <> 0)
+       OR EXISTS (SELECT 1 FROM finance.daily_records WHERE outcome = 'excluded_cancelled') THEN
+        RAISE EXCEPTION 'refusing rollback: cancellation-exclusion facts exist';
+    END IF;
+END $$;
+
+ALTER TABLE finance.daily_records DROP CONSTRAINT daily_records_outcome_check;
+ALTER TABLE finance.daily_records
+    ADD CONSTRAINT daily_records_outcome_check CHECK (outcome IN (
+        'retained', 'excluded_rate_code', 'duplicate', 'validation_failed', 'price_unmatched'
+    ));
+ALTER TABLE finance.daily_versions DROP CONSTRAINT daily_versions_counts_reconcile;
+ALTER TABLE finance.daily_versions
+    ADD CONSTRAINT daily_versions_counts_reconcile CHECK (
+        source_rows = retained_rows + excluded_rate_code_rows + duplicate_rows
+            + validation_failed_rows + price_unmatched_rows
+    );
+ALTER TABLE finance.daily_versions DROP COLUMN excluded_cancelled_rows;
+COMMIT;

database/020_daily_cancelled_exclusion.sql

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+-- Add an auditable cancellation exclusion count without changing released facts.
+-- PostgreSQL 15+. Migrations 008 through 019 remain immutable.
+BEGIN;
+DO $$
+BEGIN
+    IF current_database() <> 'booking_test' THEN
+        RAISE EXCEPTION 'ARR migration is allowed only in booking_test';
+    END IF;
+    IF to_regclass('finance.daily_versions') IS NULL
+       OR to_regclass('finance.daily_records') IS NULL
+       OR NOT EXISTS (
+           SELECT 1 FROM pg_constraint
+           WHERE conrelid = 'ingestion.artifacts'::regclass
+             AND conname = 'artifacts_artifact_kind_check'
+             AND pg_get_constraintdef(oid) LIKE '%ohip_json%'
+       ) THEN
+        RAISE EXCEPTION 'ARR migration 019 must be applied first';
+    END IF;
+END $$;
+
+ALTER TABLE finance.daily_versions
+    ADD COLUMN excluded_cancelled_rows integer NOT NULL DEFAULT 0
+        CHECK (excluded_cancelled_rows >= 0);
+
+ALTER TABLE finance.daily_versions
+    DROP CONSTRAINT daily_versions_counts_reconcile;
+ALTER TABLE finance.daily_versions
+    ADD CONSTRAINT daily_versions_counts_reconcile CHECK (
+        source_rows = retained_rows + excluded_rate_code_rows + duplicate_rows
+            + validation_failed_rows + price_unmatched_rows + excluded_cancelled_rows
+    );
+
+ALTER TABLE finance.daily_records
+    DROP CONSTRAINT daily_records_outcome_check;
+ALTER TABLE finance.daily_records
+    ADD CONSTRAINT daily_records_outcome_check CHECK (outcome IN (
+        'retained', 'excluded_rate_code', 'duplicate', 'validation_failed',
+        'price_unmatched', 'excluded_cancelled'
+    ));
+
+COMMENT ON COLUMN finance.daily_versions.excluded_cancelled_rows IS
+  'Source rows explicitly excluded as cancelled under the pinned processor rules; older versions remain zero.';
+COMMIT;