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

deepseek/deepseek-v4-pro · d2_live_migration · rep 2

pass

model

deepseek/deepseek-v4-pro

task

d2_live_migration

rep

day

steps

tokens

34,693

est. cost

$0.021

agent time

103s

wave

started

2026-07-24T05:57:49Z

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 — 13 commands

#1exit 0

echo "=== SUPABASE_URL: $SUPABASE_URL ===" && echo "=== Checking orders table schema ===" && PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.orders" && echo "=== Row count ===" && PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT COUNT(*) FROM public.orders;" && echo "=== Sample rows ===" && PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT * FROM public.orders ORDER BY id LIMIT 5;" && echo "=== Distinct customer emails ===" && PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT COUNT(DISTINCT customer_email) FROM public.orders;"

=== SUPABASE_URL: https://<ref>.supabase.co ===
=== Checking orders table schema ===
                           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 ===
 count 
-------
   120
(1 row)

=== Sample rows ===
 id |    customer_name    |      customer_email      |     item     | amount_cents |       created_at       
----+---------------------+--------------------------+--------------+--------------+------------------------
  1 | Customer-2869aff5cb | 66f4f3939508@example.com | SKU-87D9B53C |         3871 | 2026-01-01 01:00:00+00
  2 | Customer-02e8dd9b22 | 909ae9a9012e@example.com | SKU-0E31CD9F |        80337 | 2026-01-01 02:00:00+00
  3 | Customer-97b7f3c8c7 | a6b2c9ac98f9@example.com | SKU-C4C1B8CF |        56951 | 2026-01-01 03:00:00+00
  4 | Customer-fcbcf70008 | f2f8bede9b88@example.com | SKU-BE7A64BE |        22040 | 2026-01-01 04:00:00+00
  5 | Customer-beeac6a182 | c6397bcf31c6@example.com | SKU-7C3D3496 |         5665 | 2026-01-01 05:00:00+00
(5 rows)

=== Distinct customer emails ===
 count 
-------
    40
(1 row)

#2exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT customer_email, COUNT(DISTINCT customer_name) AS name_count FROM public.orders GROUP BY customer_email HAVING COUNT(DISTINCT customer_name) > 1;"

 customer_email | name_count 
----------------+------------
(0 rows)

#3exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
CREATE TABLE public.customers (
    id bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
    name text NOT NULL,
    email text NOT NULL UNIQUE
);"

CREATE TABLE

#4exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
INSERT INTO public.customers (name, email)
SELECT DISTINCT customer_name, customer_email
FROM public.orders
ORDER BY customer_email;"

INSERT 0 40

#5exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
ALTER TABLE public.orders ADD COLUMN customer_id bigint;"

ALTER TABLE

#6exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
UPDATE public.orders o
SET customer_id = c.id
FROM public.customers c
WHERE o.customer_email = c.email;"

UPDATE 120

#7exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
SELECT COUNT(*) AS null_customer_ids FROM public.orders WHERE customer_id IS NULL;"

 null_customer_ids 
-------------------
                 0
(1 row)

#8exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
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);"

ALTER TABLE
ALTER TABLE

#9exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
ALTER TABLE public.orders DROP COLUMN customer_name;
ALTER TABLE public.orders DROP COLUMN customer_email;"

ALTER TABLE
ALTER TABLE

#10exit 1

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
-- Verify orders table structure
\d public.orders

-- Verify customers table structure
\d public.customers

-- Verify row count + no data loss: join back and compare with original shape
SELECT 'orders count' AS check, COUNT(*) AS val FROM public.orders
UNION ALL
SELECT 'customers count', COUNT(*)::text FROM public.customers
UNION ALL
SELECT 'join count', COUNT(*)::text 
FROM public.orders o JOIN public.customers c ON o.customer_id = c.id
UNION ALL
SELECT 'orphan orders', COUNT(*)::text 
FROM public.orders o LEFT JOIN public.customers c ON o.customer_id = c.id WHERE c.id IS NULL;"

ERROR:  syntax error at or near "\"
LINE 3: \d public.orders
        ^

#11exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.orders" && echo "---" && PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "\d public.customers"

                          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)

#12exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
SELECT 'Orders count' AS check, COUNT(*)::text AS val FROM public.orders
UNION ALL
SELECT 'Customers count', COUNT(*)::text FROM public.customers
UNION ALL
SELECT 'Joined count', COUNT(*)::text
FROM public.orders o JOIN public.customers c ON o.customer_id = c.id
UNION ALL
SELECT 'Orphan orders', COUNT(*)::text
FROM public.orders o LEFT JOIN public.customers c ON o.customer_id = c.id WHERE c.id IS NULL;"

      check      | val 
-----------------+-----
 Orders count    | 120
 Customers count | 40
 Joined count    | 120
 Orphan orders   | 0
(4 rows)

#13exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
SELECT o.id, c.name, c.email, o.item, o.amount_cents, o.created_at
FROM public.orders o
JOIN public.customers c ON o.customer_id = c.id
ORDER BY o.id
LIMIT 10;"

 id |        name         |          email           |     item     | amount_cents |       created_at       
----+---------------------+--------------------------+--------------+--------------+------------------------
  1 | Customer-2869aff5cb | 66f4f3939508@example.com | SKU-87D9B53C |         3871 | 2026-01-01 01:00:00+00
  2 | Customer-02e8dd9b22 | 909ae9a9012e@example.com | SKU-0E31CD9F |        80337 | 2026-01-01 02:00:00+00
  3 | Customer-97b7f3c8c7 | a6b2c9ac98f9@example.com | SKU-C4C1B8CF |        56951 | 2026-01-01 03:00:00+00
  4 | Customer-fcbcf70008 | f2f8bede9b88@example.com | SKU-BE7A64BE |        22040 | 2026-01-01 04:00:00+00
  5 | Customer-beeac6a182 | c6397bcf31c6@example.com | SKU-7C3D3496 |         5665 | 2026-01-01 05:00:00+00
  6 | Customer-a0ea908d6a | 1d4a857f6a1c@example.com | SKU-25AEB703 |        42266 | 2026-01-01 06:00:00+00
  7 | Customer-3e03962dc8 | e2616d8facdb@example.com | SKU-5040D99A |        75256 | 2026-01-01 07:00:00+00
  8 | Customer-a0aaa81ec2 | 7ff8d006b700@example.com | SKU-5835B4E7 |        14020 | 2026-01-01 08:00:00+00
  9 | Customer-6a790722ea | dbceb2b1f914@example.com | SKU-379B3FCE |        71224 | 2026-01-01 09:00:00+00
 10 | Customer-91b0480c58 | 3952e23484e0@example.com | SKU-B1267538 |        30012 | 2026-01-01 10:00:00+00
(10 rows)

What it said at the end

Everything checks out perfectly. Here's a summary of what was done: --- ## Migration Summary **Step 1 — Create `public.customers`:** - Created with columns: `id` (bigint, generated always as identity, PK), `name` (text, NOT NULL), `email` (text, NOT NULL, UNIQUE). - Populated with 40 distinct `(customer_name, customer_email)` pairs from `orders`. **Step 2 — Add `customer_id` to `public.orders` and backfill:** - Added `customer_id bigint` (nullable initially). - Updated all 120 rows: `customer_id = customers.id` matched via `customer_email`. - Verified zero nulls, then applied `NOT NULL` constraint and a foreign key referencing `customers(id)`. **Step 3 — Drop denormalized columns:** - Dropped `customer_name` and `customer_email` from `orders`. **Final state:** - `public.orders` — 120 rows, columns: `id`, `item`, `amount_cents`, `created_at`, `customer_id` (NOT NULL, FK → customers.id). All original non-customer data preserved exactly. - `public.customers` — 40 rows, one per distinct email. - `JOIN orders o ON customers c USING (customer_id)` reconstructs the original rows perfectly. Zero data loss.

10 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