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

z-ai/glm-5.2 · d2_live_migration · rep 1

pass
model
z-ai/glm-5.2
task
d2_live_migration
rep
1
day
2
steps
7
tokens
13,897
est. cost
$0.021
agent time
63s
wave
s4
started
2026-07-24T15:48:50Z

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 "Checking environment variables..." && env | grep -i supabase | sed 's/=.*/=***/'
Checking environment variables...
SUPABASE_DB_PASSWORD=***
SUPABASE_DB_URL=***
SUPABASE_URL=***
SUPABASE_SERVICE_ROLE_KEY=***
SUPABASE_PROJECT_REF=***
SUPABASE_ANON_KEY=***
#2exit 0
echo "$SUPABASE_DB_URL" | head -c 200
<redacted:SUPABASE_DB_URL>
#3exit 0
which psql 2>/dev/null; psql --version 2>/dev/null; which python3 2>/dev/null
/usr/bin/psql
psql (PostgreSQL) 18.4 (Debian 18.4-1.pgdg12+1)
/usr/bin/python3
#4exit 0
export PGPASSWORD="$(echo "$SUPABASE_DB_URL" | sed 's|.*://[^:]*:\([^@]*\)@.*|\1|')"
DB_HOST="$(echo "$SUPABASE_DB_URL" | sed 's|.*@\([^:]*\):.*|\1|')"
DB_PORT="$(echo "$SUPABASE_DB_URL" | sed 's|.*:\([0-9]*\)/.*|\1|')"
DB_NAME="$(echo "$SUPABASE_DB_URL" | sed 's|.*/||')"
DB_USER="$(echo "$SUPABASE_DB_URL" | sed 's|.*//\([^:]*\):.*|\1|')"
echo "host=$DB_HOST port=$DB_PORT user=$DB_USER dbname=$DB_NAME"
psql "host=$DB_HOST port=$DB_PORT user=$DB_USER dbname=$DB_NAME sslmode=require" -c "SELECT count(*) FROM public.orders;"
host=aws-0-us-east-1.pooler.supabase.com port=5432 user=postgres.<ref> dbname=postgres
 count 
-------
   120
(1 row)
#5exit 0
export PGPASSWORD="$(echo "$SUPABASE_DB_URL" | sed 's|.*://[^:]*:\([^@]*\)@.*|\1|')"
DB_HOST="$(echo "$SUPABASE_DB_URL" | sed 's|.*@\([^:]*\):.*|\1|')"
DB_PORT="$(echo "$SUPABASE_DB_URL" | sed 's|.*:\([0-9]*\)/.*|\1|')"
DB_NAME="$(echo "$SUPABASE_DB_URL" | sed 's|.*/||')"
DB_USER="$(echo "$SUPABASE_DB_URL" | sed 's|.*//\([^:]*\):.*|\1|')"
CONNSTR="host=$DB_HOST port=$DB_PORT user=$DB_USER dbname=$DB_NAME sslmode=require"

echo "=== Table structure ==="
psql "$CONNSTR" -c "\d public.orders"
echo "=== Sample rows ==="
psql "$CONNSTR" -c "SELECT id, customer_name, customer_email, item, amount_cents, created_at FROM public.orders ORDER BY id LIMIT 5;"
echo "=== Distinct emails count ==="
psql "$CONNSTR" -c "SELECT count(DISTINCT customer_email) FROM public.orders;"
echo "=== Distinct (name,email) pairs ==="
psql "$CONNSTR" -c "SELECT count(*) FROM (SELECT DISTINCT customer_name, customer_email FROM public.orders) t;"
echo "=== Emails with conflicting names ==="
psql "$CONNSTR" -c "SELECT customer_email, count(DISTINCT customer_name) as name_count FROM public.orders GROUP BY customer_email HAVING count(DISTINCT customer_name) > 1;"
=== Table 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)

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

=== Distinct (name,email) pairs ===
 count 
-------
    40
(1 row)

=== Emails with conflicting names ===
 customer_email | name_count 
----------------+------------
(0 rows)
#6exit 0
export PGPASSWORD="$(echo "$SUPABASE_DB_URL" | sed 's|.*://[^:]*:\([^@]*\)@.*|\1|')"
DB_HOST="$(echo "$SUPABASE_DB_URL" | sed 's|.*@\([^:]*\):.*|\1|')"
DB_PORT="$(echo "$SUPABASE_DB_URL" | sed 's|.*:\([0-9]*\)/.*|\1|')"
DB_NAME="$(echo "$SUPABASE_DB_URL" | sed 's|.*/||')"
DB_USER="$(echo "$SUPABASE_DB_URL" | sed 's|.*//\([^:]*\):.*|\1|')"
CONNSTR="host=$DB_HOST port=$DB_PORT user=$DB_USER dbname=$DB_NAME sslmode=require"

psql "$CONNSTR" <<'SQL'
BEGIN;

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

-- 2) Backfill: insert one row per distinct (name, email) pair from orders
INSERT INTO public.customers (name, email)
SELECT DISTINCT customer_name, customer_email
FROM public.orders
ORDER BY customer_email
ON CONFLICT (email) DO NOTHING;

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

-- 4) Backfill customer_id by matching on both name and email
UPDATE public.orders AS o
SET customer_id = c.id
FROM public.customers AS c
WHERE o.customer_email = c.email AND o.customer_name = c.name;

-- Verify no orders are missing a customer_id before enforcing NOT NULL
DO $$
DECLARE
    missing_count integer;
BEGIN
    SELECT count(*) INTO missing_count FROM public.orders WHERE customer_id IS NULL;
    IF missing_count > 0 THEN
        RAISE EXCEPTION 'Backfill failed: % orders have NULL customer_id', missing_count;
    END IF;
END $$;

-- 5) Enforce NOT NULL and add FK constraint
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);

-- 6) Drop the denormalized columns
ALTER TABLE public.orders DROP COLUMN customer_name;
ALTER TABLE public.orders DROP COLUMN customer_email;

COMMIT;

\echo 'Migration complete.'
SQL
BEGIN
CREATE TABLE
INSERT 0 40
ALTER TABLE
UPDATE 120
DO
ALTER TABLE
ALTER TABLE
ALTER TABLE
ALTER TABLE
COMMIT
Migration complete.
#7exit 0
export PGPASSWORD="$(echo "$SUPABASE_DB_URL" | sed 's|.*://[^:]*:\([^@]*\)@.*|\1|')"
DB_HOST="$(echo "$SUPABASE_DB_URL" | sed 's|.*@\([^:]*\):.*|\1|')"
DB_PORT="$(echo "$SUPABASE_DB_URL" | sed 's|.*:\([0-9]*\)/.*|\1|')"
DB_NAME="$(echo "$SUPABASE_DB_URL" | sed 's|.*/||')"
DB_USER="$(echo "$SUPABASE_DB_URL" | sed 's|.*//\([^:]*\):.*|\1|')"
CONNSTR="host=$DB_HOST port=$DB_PORT user=$DB_USER dbname=$DB_NAME sslmode=require"

echo "=== orders structure ==="
psql "$CONNSTR" -c "\d public.orders"
echo ""
echo "=== customers structure ==="
psql "$CONNSTR" -c "\d public.customers"
echo ""
echo "=== orders count ==="
psql "$CONNSTR" -c "SELECT count(*) FROM public.orders;"
echo "=== customers count ==="
psql "$CONNSTR" -c "SELECT count(*) FROM public.customers;"
echo "=== orders with NULL customer_id (should be 0) ==="
psql "$CONNSTR" -c "SELECT count(*) FROM public.orders WHERE customer_id IS NULL;"
echo "=== orphan check: orders without matching customer (should be 0) ==="
psql "$CONNSTR" -c "SELECT count(*) FROM public.orders o LEFT JOIN public.customers c ON o.customer_id = c.id WHERE c.id IS NULL;"
echo "=== sample join ==="
psql "$CONNSTR" -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 5;"
=== orders structure ===
                          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)


=== customers structure ===
                       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)


=== orders count ===
 count 
-------
   120
(1 row)

=== customers count ===
 count 
-------
    40
(1 row)

=== orders with NULL customer_id (should be 0) ===
 count 
-------
     0
(1 row)

=== orphan check: orders without matching customer (should be 0) ===
 count 
-------
     0
(1 row)

=== sample join ===
 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
(5 rows)

What it said at the end

Migration complete. Here's what was done: ## Summary Executed a single-transaction production migration against the live Supabase database: 1. **Created `public.customers`** — `id bigint GENERATED ALWAYS AS IDENTITY PRIMARY KEY`, `name text NOT NULL`, `email text NOT NULL UNIQUE`. 2. **Populated customers** — inserted 40 rows (one per distinct customer email in orders, each carrying its corresponding name). Verified beforehand that no email had conflicting names, ensuring zero ambiguity. 3. **Added `customer_id bigint`** to `public.orders` (initially nullable for safe backfill). 4. **Backfilled** all 120 orders by joining on both `customer_name` and `customer_email` → `customers.id`, ensuring exact matching. 5. **Validated** zero rows had NULL `customer_id`, then enforced `NOT NULL` and added the FK constraint `orders_customer_id_fkey`. 6. **Dropped** `customer_name` and `customer_email` from `orders`. ## Verification Results | Check | Result | |---|---| | Total orders surviving | 120 ✓ | | Total customers created | 40 ✓ | | Orders with NULL customer_id | 0 ✓ | | Orphaned orders (no matching customer) | 0 ✓ | | `id`, `item`, `amount_cents`, `created_at` columns intact | ✓ | | `customer_name`/`customer_email` dropped | ✓ | | FK constraint in place | ✓ | The orders table was never dropped, truncated, or recreated — all original columns (`id`, `item`, `amount_cents`, `created_at`) retain their exact values. Customer identity is now normalized via `customer_id` referencing `public.customers(id)`.

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