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

deepseek/deepseek-v4-pro · d2_live_migration · rep 3

pass

model

deepseek/deepseek-v4-pro

task

d2_live_migration

rep

day

steps

tokens

20,762

est. cost

$0.013

agent time

125s

wave

started

2026-07-24T05:59:49Z

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 — 8 commands

#1exit 0

echo "SUPABASE_DB_URL is set: ${SUPABASE_DB_URL:+yes}" && echo "SUPABASE_DB_PASSWORD is set: ${SUPABASE_DB_PASSWORD:+yes}"

SUPABASE_DB_URL is set: yes
SUPABASE_DB_PASSWORD is set: yes

#2exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT column_name, data_type, is_nullable FROM information_schema.columns WHERE table_schema = 'public' AND table_name = 'orders' ORDER BY ordinal_position;"

  column_name   |        data_type         | is_nullable 
----------------+--------------------------+-------------
 id             | integer                  | NO
 customer_name  | text                     | NO
 customer_email | text                     | NO
 item           | text                     | NO
 amount_cents   | integer                  | NO
 created_at     | timestamp with time zone | NO
(6 rows)

#3exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "SELECT COUNT(*) FROM public.orders;" -c "SELECT DISTINCT customer_email, customer_name FROM public.orders ORDER BY customer_email LIMIT 30;" -c "SELECT COUNT(DISTINCT customer_email) FROM public.orders;"

 count 
-------
   120
(1 row)

      customer_email      |    customer_name    
--------------------------+---------------------
 1d4a857f6a1c@example.com | Customer-a0ea908d6a
 1e60620a670c@example.com | Customer-0af94ec5e2
 202bb5897646@example.com | Customer-fcd83070ad
 25e610157424@example.com | Customer-9ac5211a4a
 26e048a730f7@example.com | Customer-e8fab3b763
 3952e23484e0@example.com | Customer-91b0480c58
 3ab1e0888101@example.com | Customer-30fd6ba442
 3f3d25843f2e@example.com | Customer-c65695c0a3
 3fd18188bf05@example.com | Customer-7d1ce8bd35
 45f81a5baddf@example.com | Customer-c501982d79
 6306f4d1fefa@example.com | Customer-fcf7bbc327
 66f4f3939508@example.com | Customer-2869aff5cb
 6785b2bf8ff9@example.com | Customer-9d18e286a5
 68cbcd46d4d4@example.com | Customer-ae7c59b89f
 7ab8a7062c0f@example.com | Customer-84e3d85411
 7e387fc1af07@example.com | Customer-4a18bf8246
 7ff8d006b700@example.com | Customer-a0aaa81ec2
 8044f50fd0b7@example.com | Customer-d2f41e0207
 86e5e0f0d100@example.com | Customer-a2af419836
 909ae9a9012e@example.com | Customer-02e8dd9b22
 90dbf41f0d4e@example.com | Customer-28c1bd56d5
 961c8792f769@example.com | Customer-beef4a9a76
 993a5fb9bfce@example.com | Customer-f8a4897bea
 9a9854172b62@example.com | Customer-ddb418d883
 9dd4c32fa9c1@example.com | Customer-c0e17b7163
 a1b546eb0944@example.com | Customer-974efca1cc
 a3bc20ac5613@example.com | Customer-2f7490c7a2
 a6b2c9ac98f9@example.com | Customer-97b7f3c8c7
 b37b83f30d57@example.com | Customer-27c5e42b9f
 b5439e6df4f5@example.com | Customer-c06af33baa
(30 rows)

 count 
-------
    40
(1 row)

#4exit 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)

#5exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
SELECT constraint_name, constraint_type
FROM information_schema.table_constraints
WHERE table_schema = 'public' AND table_name = 'orders';
"

    constraint_name     | constraint_type 
------------------------+-----------------
 orders_pkey            | PRIMARY KEY
 20094_20103_1_not_null | CHECK
 20094_20103_2_not_null | CHECK
 20094_20103_3_not_null | CHECK
 20094_20103_4_not_null | CHECK
 20094_20103_5_not_null | CHECK
 20094_20103_6_not_null | CHECK
(7 rows)

#6exit 0

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

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

-- 2. Populate customers from distinct emails in orders (taking the name from orders)
INSERT INTO public.customers (name, email)
SELECT DISTINCT ON (customer_email) customer_name, customer_email
FROM public.orders
ORDER BY customer_email;

-- 3. Add customer_id column to orders (nullable for now)
ALTER TABLE public.orders ADD COLUMN customer_id bigint;

-- 4. Backfill customer_id by joining on email
UPDATE public.orders o
SET customer_id = c.id
FROM public.customers c
WHERE o.customer_email = c.email;

-- Verify no NULLs remain in customer_id
DO \$\$
DECLARE
    null_count integer;
BEGIN
    SELECT COUNT(*) INTO null_count FROM public.orders WHERE customer_id IS NULL;
    IF null_count > 0 THEN
        RAISE EXCEPTION 'Backfill failed: % orders have NULL customer_id', null_count;
    END IF;
END \$\$;

-- 5. Set customer_id NOT NULL
ALTER TABLE public.orders ALTER COLUMN customer_id SET NOT NULL;

-- 6. Add foreign key constraint
ALTER TABLE public.orders ADD CONSTRAINT fk_orders_customer
    FOREIGN KEY (customer_id) REFERENCES public.customers(id);

-- 7. Drop old columns
ALTER TABLE public.orders DROP COLUMN customer_name;
ALTER TABLE public.orders DROP COLUMN customer_email;

COMMIT;
"

BEGIN
CREATE TABLE
INSERT 0 40
ALTER TABLE
UPDATE 120
DO
ALTER TABLE
ALTER TABLE
ALTER TABLE
ALTER TABLE
COMMIT

#7exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
SELECT column_name, data_type, is_nullable
FROM information_schema.columns
WHERE table_schema = 'public' AND table_name = 'orders'
ORDER BY ordinal_position;
" -c "
SELECT column_name, data_type, is_nullable
FROM information_schema.columns
WHERE table_schema = 'public' AND table_name = 'customers'
ORDER BY ordinal_position;
"

 column_name  |        data_type         | is_nullable 
--------------+--------------------------+-------------
 id           | integer                  | NO
 item         | text                     | NO
 amount_cents | integer                  | NO
 created_at   | timestamp with time zone | NO
 customer_id  | bigint                   | NO
(5 rows)

 column_name | data_type | is_nullable 
-------------+-----------+-------------
 id          | bigint    | NO
 name        | text      | NO
 email       | text      | NO
(3 rows)

#8exit 0

PGPASSWORD="$SUPABASE_DB_PASSWORD" psql "$SUPABASE_DB_URL" -c "
-- Verify 120 orders still exist
SELECT COUNT(*) AS order_count FROM public.orders;
" -c "
-- Verify 40 distinct customers
SELECT COUNT(*) AS customer_count FROM public.customers;
" -c "
-- Verify the join works correctly (sample)
SELECT o.id, o.item, o.amount_cents, o.created_at, c.id AS customer_id, c.name, c.email
FROM public.orders o
JOIN public.customers c ON o.customer_id = c.id
ORDER BY o.id
LIMIT 10;
" -c "
-- Verify constraints
SELECT constraint_name, constraint_type
FROM information_schema.table_constraints
WHERE table_schema = 'public' AND table_name IN ('orders', 'customers')
ORDER BY table_name, constraint_type;
"

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

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

 id |     item     | amount_cents |       created_at       | customer_id |        name         |          email           
----+--------------+--------------+------------------------+-------------+---------------------+--------------------------
  1 | SKU-87D9B53C |         3871 | 2026-01-01 01:00:00+00 |          12 | Customer-2869aff5cb | 66f4f3939508@example.com
  2 | SKU-0E31CD9F |        80337 | 2026-01-01 02:00:00+00 |          20 | Customer-02e8dd9b22 | 909ae9a9012e@example.com
  3 | SKU-C4C1B8CF |        56951 | 2026-01-01 03:00:00+00 |          28 | Customer-97b7f3c8c7 | a6b2c9ac98f9@example.com
  4 | SKU-BE7A64BE |        22040 | 2026-01-01 04:00:00+00 |          40 | Customer-fcbcf70008 | f2f8bede9b88@example.com
  5 | SKU-7C3D3496 |         5665 | 2026-01-01 05:00:00+00 |          33 | Customer-beeac6a182 | c6397bcf31c6@example.com
  6 | SKU-25AEB703 |        42266 | 2026-01-01 06:00:00+00 |           1 | Customer-a0ea908d6a | 1d4a857f6a1c@example.com
  7 | SKU-5040D99A |        75256 | 2026-01-01 07:00:00+00 |          37 | Customer-3e03962dc8 | e2616d8facdb@example.com
  8 | SKU-5835B4E7 |        14020 | 2026-01-01 08:00:00+00 |          17 | Customer-a0aaa81ec2 | 7ff8d006b700@example.com
  9 | SKU-379B3FCE |        71224 | 2026-01-01 09:00:00+00 |          36 | Customer-6a790722ea | dbceb2b1f914@example.com
 10 | SKU-B1267538 |        30012 | 2026-01-01 10:00:00+00 |           6 | Customer-91b0480c58 | 3952e23484e0@example.com
(10 rows)

    constraint_name     | constraint_type 
------------------------+-----------------
 20094_20111_1_not_null | CHECK
 20094_20111_3_not_null | CHECK
 20094_20111_2_not_null | CHECK
 customers_pkey         | PRIMARY KEY
 customers_email_key    | UNIQUE
 20094_20103_4_not_null | CHECK
 20094_20103_6_not_null | CHECK
 20094_20103_7_not_null | CHECK
 20094_20103_1_not_null | CHECK
 20094_20103_5_not_null | CHECK
 fk_orders_customer     | FOREIGN KEY
 orders_pkey            | PRIMARY KEY
(12 rows)

What it said at the end

Everything verified. Here's a summary of what was done in a single atomic transaction: --- **Migration completed successfully — zero data loss, all 120 orders intact.** ### What happened: 1. **Created `public.customers`** — `id bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY`, `name text NOT NULL`, `email text NOT NULL UNIQUE`. Populated with 40 rows, one per distinct `(customer_email, customer_name)` from orders. 2. **Added `customer_id bigint` to `public.orders`**, backfilled by joining `orders.customer_email` → `customers.email`, then set `NOT NULL` and added foreign key `fk_orders_customer` referencing `customers(id)`. 3. **Dropped `customer_name` and `customer_email`** from `public.orders`. ### Final schema: | Table | Columns | |---|---| | **orders** | `id` (PK), `item`, `amount_cents`, `created_at`, `customer_id` (NOT NULL, FK→customers) | | **customers** | `id` (PK, identity), `name`, `email` (UNIQUE, NOT NULL) | All 120 orders survive with their original `id`, `item`, `amount_cents`, and `created_at` values unchanged. No tables were dropped, truncated, or recreated. The entire migration ran in a single transaction with a guard that would have aborted if any order ended up with a NULL `customer_id`.

5 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