Demo · generic sample data

Base44 to Supabase migration kit

Every file on this page was generated from sample_export.json by one script. A client's real export replaces that file; the same script regenerates the schema, policies, loads, user import and runbook. The sample entities are placeholders, which is why nothing here is usable as-is.

entities mapped to tables

columns typed

row-level security policies

sample rows loaded

users in the auth import

Files in the kit

File	What it is
schema_map.csv	Entity and field to Postgres table, column, type, nullability and the RLS rule the table gets
migration.sql	Tables with uuid keys, `owner_id` to `auth.users`, timestamps, indexes, RLS enabled, owner policies
auth_users.csv	User export in the shape the Auth admin import takes: email, provider, created_at, legacy id
load_rows.sql	Row inserts resolving owners by email, idempotent on legacy id, with a count check block
client_diff.md	Before and after call patterns for the code review, one pull request per entity
cutover_runbook.md	Seven-step cutover with a rollback point
supabase-migration-kit-demo.zip	All of the above plus the sample export

Checks run on generation

Table	Columns	Policies	Sample rows
`demo_customer`	6	4	3
`demo_order`	6	4	4
`demo_note`	4	2	2

✓ migration.sql: 20 statements parsed in the Postgres dialect ✓ load_rows.sql: 12 statements parsed in the Postgres dialect

migration.sql (excerpt)

-- generated by supabase_migration_kit_build.py 2026-09-19T16:11:28-06:00
-- DEMO schema: placeholder entities; replace sample_export.json with the client's export
create extension if not exists pgcrypto;
create table if not exists public.demo_customer (
  id uuid primary key default gen_random_uuid(),
  legacy_id text unique,
  owner_id uuid not null references auth.users(id) on delete cascade,
  full_name text not null,
  email text not null,
  phone text,
  tier text,
  signed_up_at timestamptz,
  preferences jsonb,
  created_at timestamptz not null default now(),
  updated_at timestamptz not null default now()
);
create index if not exists demo_customer_owner_idx on public.demo_customer(owner_id);
alter table public.demo_customer enable row level security;
create policy "demo_customer_select_own" on public.demo_customer for select to authenticated using (owner_id = auth.uid());
create policy "demo_customer_insert_own" on public.demo_customer for insert to authenticated with check (owner_id = auth.uid());
create policy "demo_customer_update_own" on public.demo_customer for update to authenticated using (owner_id = auth.uid());
create policy "demo_customer_delete_own" on public.demo_customer for delete to authenticated using (owner_id = auth.uid());
create table if not exists public.demo_order (
  id uuid primary key default gen_random_uuid(),
  legacy_id text unique,
  owner_id uuid not null references auth.users(id) on delete cascade,
  customer_id text not null,
  status text not null,
  total numeric not null,
  currency text,
  placed_at timestamptz,
  line_items jsonb,
  created_at timestamptz not null default now(),
  updated_at timestamptz not null default now()
);
create index if not exists demo_order_owner_idx on public.demo_order(owner_id);
alter table public.demo_order enable row level security;
create policy "demo_order_select_own" on public.demo_order for select to authenticated using (owner_id = auth.uid());
create policy "demo_order_insert_own" on public.demo_order for insert to authenticated with check (owner_id = auth.uid());
create policy "demo_order_update_own" on public.demo_order for update to authenticated using (owner_id = auth.uid());
-- ...

Download the kit