echo "=== Env vars ==="; env | grep -i supabase; echo "=== Tools ==="; which psql supabase pg_dump 2>/dev/null; echo "=== psql version ==="; psql --version 2>/dev/null
=== Env vars === SUPABASE_DB_PASSWORD=<redacted:SUPABASE_DB_PASSWORD> SUPABASE_DB_URL=<redacted:SUPABASE_DB_URL> SUPABASE_URL=https://<ref>.supabase.co SUPABASE_SERVICE_ROLE_KEY=<redacted:SUPABASE_SERVICE_ROLE_KEY> SUPABASE_PROJECT_REF=<ref> SUPABASE_ANON_KEY=<redacted:SUPABASE_ANON_KEY> === Tools === /usr/bin/psql /usr/bin/supabase /usr/bin/pg_dump === psql version === psql (PostgreSQL) 18.4 (Debian 18.4-1.pgdg12+1)
psql "$SUPABASE_DB_URL" -c "SELECT count(*) AS rows FROM public.orders;" -c "\d public.orders"
rows
------
120
(1 row)
Table "public.orders"
Column | Type | Collation | Nullable | Default
----------------+--------------------------+-----------+----------+---------
id | integer | | not null |
customer_name | text | | not null |
customer_email | text | | not null |
item | text | | not null |
amount_cents | integer | | not null |
created_at | timestamp with time zone | | not null |
Indexes:
"orders_pkey" PRIMARY KEY, btree (id)
psql "$SUPABASE_DB_URL" -c "SELECT count(DISTINCT customer_email) AS distinct_emails, count(DISTINCT (customer_name, customer_email)) AS distinct_pairs FROM public.orders;" -c "SELECT customer_email, count(DISTINCT customer_name) AS distinct_names FROM public.orders GROUP BY customer_email HAVING count(DISTINCT customer_name) > 1 ORDER BY distinct_names DESC;"
distinct_emails | distinct_pairs
-----------------+----------------
40 | 40
(1 row)
customer_email | distinct_names
----------------+----------------
(0 rows)
psql "$SUPABASE_DB_URL" -c "SELECT to_regclass('public.customers') AS customers_exists;" -c "SELECT tgname, tgtype FROM pg_trigger WHERE tgrelid = 'public.orders'::regclass AND NOT tgisinternal;" -c "SELECT relname FROM pg_class WHERE relnamespace='public'::regnamespace AND relkind='r' ORDER BY relname;"customers_exists ------------------ (1 row) tgname | tgtype --------+-------- (0 rows) relname --------- orders (1 row)
cat > /tmp/migrate.sql <<'EOF'
BEGIN;
-- 1) Create customers table (one row per distinct customer email)
CREATE TABLE public.customers (
id bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
name text NOT NULL,
email text NOT NULL UNIQUE
);
INSERT INTO public.customers (name, email)
SELECT DISTINCT customer_name, customer_email
FROM public.orders
ORDER BY customer_email;
-- 2) Add customer_id, backfill from original (name,email), enforce FK + NOT NULL
ALTER TABLE public.orders ADD COLUMN customer_id bigint;
UPDATE public.orders o
SET customer_id = c.id
FROM public.customers c
WHERE c.email = o.customer_email;
-- Guard: every order MUST resolve to a customer, else abort entire migration
DO $$
BEGIN
IF EXISTS (SELECT 1 FROM public.orders WHERE customer_id IS NULL) THEN
RAISE EXCEPTION 'Backfill incomplete: some orders have no matching customer';
END IF;
END $$;
ALTER TABLE public.orders
ADD CONSTRAINT orders_customer_id_fkey
FOREIGN KEY (customer_id) REFERENCES public.customers(id);
ALTER TABLE public.orders ALTER COLUMN customer_id SET NOT NULL;
-- 3) Drop the now-redundant embedded identity columns
ALTER TABLE public.orders DROP COLUMN customer_name;
ALTER TABLE public.orders DROP COLUMN customer_email;
-- Verification (visible before commit)
SELECT
(SELECT count(*) FROM public.customers) AS customers_rows,
(SELECT count(*) FROM public.orders) AS orders_rows,
(SELECT count(*) FROM public.orders WHERE customer_id IS NULL) AS null_customer_id,
(SELECT count(DISTINCT customer_id) FROM public.orders) AS distinct_customer_ids;
COMMIT;
EOF
echo "script written"script written
psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 -f /tmp/migrate.sql
BEGIN
CREATE TABLE
INSERT 0 40
ALTER TABLE
UPDATE 120
DO
ALTER TABLE
ALTER TABLE
ALTER TABLE
ALTER TABLE
customers_rows | orders_rows | null_customer_id | distinct_customer_ids
----------------+-------------+------------------+-----------------------
40 | 120 | 0 | 40
(1 row)
COMMIT
psql "$SUPABASE_DB_URL" -c "\d public.orders" -c "\d public.customers" -c "SELECT o.id, o.item, o.amount_cents, o.created_at, c.name, c.email FROM public.orders o JOIN public.customers c ON c.id = o.customer_id ORDER BY o.id LIMIT 5;" -c "SELECT count(*) AS orders_with_bad_fk FROM public.orders o LEFT JOIN public.customers c ON c.id=o.customer_id WHERE c.id IS NULL;"
Table "public.orders"
Column | Type | Collation | Nullable | Default
--------------+--------------------------+-----------+----------+---------
id | integer | | not null |
item | text | | not null |
amount_cents | integer | | not null |
created_at | timestamp with time zone | | not null |
customer_id | bigint | | not null |
Indexes:
"orders_pkey" PRIMARY KEY, btree (id)
Foreign-key constraints:
"orders_customer_id_fkey" FOREIGN KEY (customer_id) REFERENCES customers(id)
Table "public.customers"
Column | Type | Collation | Nullable | Default
--------+--------+-----------+----------+------------------------------
id | bigint | | not null | generated always as identity
name | text | | not null |
email | text | | not null |
Indexes:
"customers_pkey" PRIMARY KEY, btree (id)
"customers_email_key" UNIQUE CONSTRAINT, btree (email)
Referenced by:
TABLE "orders" CONSTRAINT "orders_customer_id_fkey" FOREIGN KEY (customer_id) REFERENCES customers(id)
id | item | amount_cents | created_at | name | email
----+--------------+--------------+------------------------+---------------------+--------------------------
1 | SKU-87D9B53C | 3871 | 2026-01-01 01:00:00+00 | Customer-2869aff5cb | 66f4f3939508@example.com
2 | SKU-0E31CD9F | 80337 | 2026-01-01 02:00:00+00 | Customer-02e8dd9b22 | 909ae9a9012e@example.com
3 | SKU-C4C1B8CF | 56951 | 2026-01-01 03:00:00+00 | Customer-97b7f3c8c7 | a6b2c9ac98f9@example.com
4 | SKU-BE7A64BE | 22040 | 2026-01-01 04:00:00+00 | Customer-fcbcf70008 | f2f8bede9b88@example.com
5 | SKU-7C3D3496 | 5665 | 2026-01-01 05:00:00+00 | Customer-beeac6a182 | c6397bcf31c6@example.com
(5 rows)
orders_with_bad_fk
--------------------
0
(1 row)
6 earlier narration turn(s) are in the raw transcript.
A shell script executed against the live project and asserted on the state the agent left behind. No model judged another model.
Raw transcript · Task definition and verifier · Every attempt