Can Agents Run It? · evidence — Issue 1: Supabase

tencent/hy3 · d2_live_migration · rep 1

pass
model
tencent/hy3
task
d2_live_migration
rep
1
day
2
steps
7
tokens
19,030
est. cost
$0.006
agent time
130s
wave
s4c
started
2026-07-26T02:17:39Z

The task as the agent received it

You have operator access to a hosted Supabase project. Credentials are in environment variables: SUPABASE_URL, SUPABASE_PROJECT_REF, SUPABASE_ANON_KEY, SUPABASE_SERVICE_ROLE_KEY, SUPABASE_DB_URL, SUPABASE_DB_PASSWORD. The live table public.orders (120 rows) embeds customer identity in every row: columns id, customer_name, customer_email, item, amount_cents, created_at. Normalize it on the live data with ZERO loss: 1) Create table public.customers with columns: id bigint generated always as identity primary key, name text NOT NULL, email text NOT NULL UNIQUE — one row per distinct customer email currently in orders, carrying that customer's name. 2) Add column customer_id bigint to public.orders, NOT NULL when you finish, referencing customers(id), backfilled so every order points to the customers row matching its original (customer_name, customer_email) values. 3) Then drop columns customer_name and customer_email from orders. Constraints: do NOT drop, truncate or recreate the orders table; do not alter the other order columns (id, item, amount_cents, created_at must keep their exact values); every one of the 120 orders must survive. Treat it like a production migration.

What it ran — 7 commands

#1exit 0
echo "=== Env vars (masked) ==="; for v in SUPABASE_URL SUPABASE_PROJECT_REF SUPABASE_ANON_KEY SUPABASE_SERVICE_ROLE_KEY SUPABASE_DB_URL SUPABASE_DB_PASSWORD; do printf "%s=%s\n" "$v" "$(printenv "$v" | sed 's/\(.\{6\}\).*/\1.../')"; done; echo "=== tools ==="; which psql supabase pg_dump 2>/dev/null; psql --version 2>/dev/null; echo "=== current user ==="; whoami
=== Env vars (masked) ===
SUPABASE_URL=https:...
SUPABASE_PROJECT_REF=pgepcz...
SUPABASE_ANON_KEY=eyJhbG...
SUPABASE_SERVICE_ROLE_KEY=eyJhbG...
SUPABASE_DB_URL=postgr...
SUPABASE_DB_PASSWORD=1a9f7b...
=== tools ===
/usr/bin/psql
/usr/bin/supabase
/usr/bin/pg_dump
psql (PostgreSQL) 18.4 (Debian 18.4-1.pgdg12+1)
=== current user ===
root
#2exit 0
cd /tmp; export PGPASSWORD="$SUPABASE_DB_PASSWORD"; echo "=== orders structure ==="; psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 -c "\d public.orders"; echo "=== row count ==="; psql "$SUPABASE_DB_URL" -t -c "SELECT count(*) FROM public.orders;"; echo "=== distinct customers ==="; psql "$SUPABASE_DB_URL" -t -c "SELECT count(*) FROM (SELECT DISTINCT customer_email FROM public.orders) s;"
=== orders structure ===
                           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)

=== row count ===
   120

=== distinct customers ===
    40
#3exit 0
cd /tmp; export PGPASSWORD="$SUPABASE_DB_PASSWORD"; psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 <<'SQL'
\echo '=== NULL checks ==='
SELECT count(*) AS null_name FROM public.orders WHERE customer_name IS NULL;
SELECT count(*) AS null_email FROM public.orders WHERE customer_email IS NULL;
\echo '=== emails with more than one distinct name ==='
SELECT customer_email, count(DISTINCT customer_name) AS n_names, string_agg(DISTINCT customer_name, ' | ') AS names
FROM public.orders GROUP BY customer_email HAVING count(DISTINCT customer_name) > 1;
\echo '=== duplicate emails with different casing/whitespace (lower/trim grouped) ==='
SELECT lower(trim(customer_email)) AS email_key, count(*) AS rows, count(DISTINCT customer_email) AS distinct_raw
FROM public.orders GROUP BY lower(trim(customer_email)) HAVING count(DISTINCT customer_email) > 1;
\echo '=== sample of distinct (name,email) ==='
SELECT DISTINCT customer_name, customer_email FROM public.orders ORDER BY customer_email LIMIT 5;
SQL
=== NULL checks ===
 null_name 
-----------
         0
(1 row)

 null_email 
------------
          0
(1 row)

=== emails with more than one distinct name ===
 customer_email | n_names | names 
----------------+---------+-------
(0 rows)

=== duplicate emails with different casing/whitespace (lower/trim grouped) ===
 email_key | rows | distinct_raw 
-----------+------+--------------
(0 rows)

=== sample of distinct (name,email) ===
    customer_name    |      customer_email      
---------------------+--------------------------
 Customer-a0ea908d6a | 1d4a857f6a1c@example.com
 Customer-0af94ec5e2 | 1e60620a670c@example.com
 Customer-fcd83070ad | 202bb5897646@example.com
 Customer-9ac5211a4a | 25e610157424@example.com
 Customer-e8fab3b763 | 26e048a730f7@example.com
(5 rows)
#4exit 0
cd /tmp; export PGPASSWORD="$SUPABASE_DB_PASSWORD"; psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 <<'SQL'
\echo '=== FKs / triggers on orders ==='
SELECT conname, contype FROM pg_constraint WHERE conrelid='public.orders'::regclass;
SELECT tgname FROM pg_trigger WHERE tgrelid='public.orders'::regclass AND tgisinternal=false;
\echo '=== confirm customers table does not yet exist ==='
SELECT to_regclass('public.customers');
SQL
=== FKs / triggers on orders ===
   conname   | contype 
-------------+---------
 orders_pkey | p
(1 row)

 tgname 
--------
(0 rows)

=== confirm customers table does not yet exist ===
 to_regclass 
-------------
 
(1 row)
#5exit 0
cd /tmp; export PGPASSWORD="$SUPABASE_DB_PASSWORD"; psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 <<'SQL'
SELECT current_user, current_database();
SELECT relname, relrowsecurity FROM pg_class WHERE relname IN ('orders','customers');
SQL
 current_user | current_database 
--------------+------------------
 postgres     | postgres
(1 row)

 relname | relrowsecurity 
---------+----------------
 orders  | f
(1 row)
#6exit 0
cd /tmp; cat > /tmp/migrate.sql <<'SQL'
BEGIN;

-- 1) Create the new customers table
CREATE TABLE public.customers (
    id    bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    name  text NOT NULL,
    email text NOT NULL UNIQUE
);

-- 2) Insert one row per distinct customer email (carrying its name)
INSERT INTO public.customers (name, email)
SELECT customer_name, customer_email
FROM (
    SELECT DISTINCT customer_name, customer_email
    FROM public.orders
) s
ORDER BY customer_email;

-- 3) Add customer_id column (nullable during backfill)
ALTER TABLE public.orders ADD COLUMN customer_id bigint;

-- 4) Backfill every order to its matching customer
UPDATE public.orders o
SET customer_id = c.id
FROM public.customers c
WHERE c.email = o.customer_email;

-- 5) ASSERTIONS: zero-loss guarantees before committing
DO $$
DECLARE
    v_orders    int;
    v_unmatched int;
    v_customers int;
BEGIN
    SELECT count(*) INTO v_orders FROM public.orders;
    SELECT count(*) INTO v_customers FROM public.customers;
    SELECT count(*) INTO v_unmatched
      FROM public.orders WHERE customer_id IS NULL;

    IF v_orders <> 120 THEN
        RAISE EXCEPTION 'Expected 120 orders, found %', v_orders;
    END IF;
    IF v_customers <> 40 THEN
        RAISE EXCEPTION 'Expected 40 customers, found %', v_customers;
    END IF;
    IF v_unmatched <> 0 THEN
        RAISE EXCEPTION '% orders were not matched to a customer', v_unmatched;
    END IF;
END $$;

-- 6) Enforce integrity: NOT NULL + FK
ALTER TABLE public.orders ALTER COLUMN customer_id SET NOT NULL;
ALTER TABLE public.orders
    ADD CONSTRAINT orders_customer_id_fkey
    FOREIGN KEY (customer_id) REFERENCES public.customers (id);

-- 7) Drop the now-redundant embedded identity columns
ALTER TABLE public.orders
    DROP COLUMN customer_name,
    DROP COLUMN customer_email;

COMMIT;
SQL
export PGPASSWORD="$SUPABASE_DB_PASSWORD"
psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 -f /tmp/migrate.sql
echo "EXIT_CODE=$?"
BEGIN
CREATE TABLE
INSERT 0 40
ALTER TABLE
UPDATE 120
DO
ALTER TABLE
ALTER TABLE
ALTER TABLE
COMMIT
EXIT_CODE=0
#7exit 0
cd /tmp; export PGPASSWORD="$SUPABASE_DB_PASSWORD"; psql "$SUPABASE_DB_URL" -v ON_ERROR_STOP=1 <<'SQL'
\echo '=== customers structure + count ==='
\d public.customers
SELECT count(*) AS customer_count FROM public.customers;
\echo '=== orders structure + count ==='
\d public.orders
SELECT count(*) AS order_count FROM public.orders;
\echo '=== verify no orphan / null customer_id ==='
SELECT count(*) AS bad FROM public.orders WHERE customer_id IS NULL;
\echo '=== verify join reproduces original (name,email) for all 120 ==='
SELECT count(*) AS matches
FROM public.orders o JOIN public.customers c ON c.id = o.customer_id;
\echo '=== confirm other columns untouched: distinct item/cents/timestamp preserved (spot check) ==='
SELECT id, item, amount_cents, created_at, customer_id FROM public.orders ORDER BY id LIMIT 5;
SQL
=== customers structure + count ===
                       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)

 customer_count 
----------------
             40
(1 row)

=== orders structure + count ===
                          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)

 order_count 
-------------
         120
(1 row)

=== verify no orphan / null customer_id ===
 bad 
-----
   0
(1 row)

=== verify join reproduces original (name,email) for all 120 ===
 matches 
---------
     120
(1 row)

=== confirm other columns untouched: distinct item/cents/timestamp preserved (spot check) ===
 id |     item     | amount_cents |       created_at       | customer_id 
----+--------------+--------------+------------------------+-------------
  1 | SKU-87D9B53C |         3871 | 2026-01-01 01:00:00+00 |          12
  2 | SKU-0E31CD9F |        80337 | 2026-01-01 02:00:00+00 |          20
  3 | SKU-C4C1B8CF |        56951 | 2026-01-01 03:00:00+00 |          28
  4 | SKU-BE7A64BE |        22040 | 2026-01-01 04:00:00+00 |          40
  5 | SKU-7C3D3496 |         5665 | 2026-01-01 05:00:00+00 |          33
(5 rows)

What it said at the end

Everything verified. The migration is complete and the data is intact. ## Summary I normalized `public.orders` into a proper `customers` table on the live Supabase database, as a single atomic transaction, with zero loss: **What I did** 1. **Inspected** the live data first — confirmed 120 orders, 40 distinct customer emails, no NULLs, each email maps to exactly one name, no casing/whitespace variants, no pre-existing FKs/triggers/RLS on orders, and I was connected as `postgres`. 2. **Created** `public.customers` (`id bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY`, `name text NOT NULL`, `email text NOT NULL UNIQUE`). 3. **Inserted** one row per distinct `(customer_name, customer_email)` from orders — exactly 40 rows. 4. **Added** `customer_id bigint` to `orders`, then backfilled it by joining on `customer_email` (all 120 rows matched). 5. **Enforced integrity**: `SET NOT NULL` on `customer_id` and added the FK `orders_customer_id_fkey` → `customers(id)`. 6. **Dropped** the now-redundant `customer_name` and `customer_email` columns. **Zero-loss guarantees (built-in assertions in the transaction)** - Pre-commit checks mandated exactly 120 orders, 40 customers, and 0 unmatched orders — any deviation would have rolled back. - The orders table was never dropped/truncated/recreated; only `id`, `item`, `amount_cents`, `created_at` were left untouched (verified by spot-check). - Post-migration verification: 120 orders, 40 customers, 0 NULL/`customer_id`, and joining orders→customers reproduces all 120 original identities. The other columns retain their exact values. The original embedded customer identity is fully preserved through the `orders.customer_id → customers.id` relationship.

7 earlier narration turn(s) are in the raw transcript.

How it was graded

A shell script executed against the live project and asserted on the state the agent left behind. No model judged another model.

exit 0 OK

Check it yourself

Raw transcript · Task definition and verifier · Every attempt