supabase-usage

Row-level security in Supabase uses SQL policies to restrict data access at the database level. Define RLS policies on tables to control which rows users can query, insert, update, or delete based on authentication context and custom conditions. Policies enforce access control automatically on every query.

Structure relationships using foreign keys to link tables, then query nested data with Supabase's PostgREST API or raw SQL. Define foreign key constraints to enforce referential integrity and enable efficient joins across related tables for consistent, scalable data retrieval.

Implement pagination by using LIMIT and OFFSET in SQL queries or range parameters in PostgREST calls. Set a fixed page size, calculate offset based on the current page, and fetch results in chunks to improve performance and reduce payload size.

Supabase supports OAuth sign-in through built-in providers like Google, GitHub, and others. OAuth handles user authentication and session management, allowing you to integrate third-party sign-in while Supabase manages user records and authentication state.

Query your Supabase database schema using tools to list tables and inspect column definitions, types, and constraints. Schema exploration confirms table names, relationships, and column properties before constructing queries or applying RLS policies.

Optimize Supabase queries by using indexes on frequently filtered columns, pagination for large result sets, and efficient joins with foreign keys. Execute read-only queries to verify performance and identify bottlenecks before applying changes in production.