
We’ll use a Supabase feature that leverages a database function to automatically create a record in the accounts table whenever a new user is added to the auth table.



Understanding why authentication tables need expansion: Supabase's built-in auth table lacks flexibility for custom user data, requiring a separate accounts table with fields like first_name, stripe_customer_id, and user_id for scalable user management.
The key to secure account creation without exposing API endpoints lies in using Supabase triggers and functions instead of unprotected POST requests, since signup pages have no bearer token for authentication.
How to implement database triggers and functions in Supabase: triggers detect events (like new user creation) while functions execute business logic server-side, both defined in SQL without requiring SQL expertise.
Learn to automate account record creation using database triggers: when a new user signs up, Supabase automatically creates a matching account record with the correct user_id, enabling full control over user data and future features like payment integration.
Interactive diagram used in the video
Description of a Supabase Database Function
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