SupabaseS
Supabase6mo ago
Stan

Title: auth.uid() NULL issue with RLS enabled - Project ID: enzrjbcoxqtnxirlthps

Category: Q&A / Help (Choose one when creating the discussion)

Body:

Hi Supabase Team and Community,

I'm experiencing a critical issue where auth.uid() consistently returns NULL in my SQL Editor sessions, even after extensive troubleshooting. This is preventing my RLS policies from working.

My Project Reference ID: enzrjbcoxqtnxirlthps

Problem Description:
RLS is enabled, and policies are set up correctly. Data inserts work fine. However, simulating an authenticated user with SET request.jwt.claims.sub results in auth.uid() returning NULL, which blocks all RLS-protected queries.

Steps to Reproduce (in Supabase SQL Editor):

SQL

SET ROLE authenticated;
-- Alice's actual UUID, confirmed correct and exists in auth.users and public.students.
SET request.jwt.claims.sub = '03bfd497-c56d-4aed-b2dc-6a93a3ec495b';

SELECT auth.uid() AS current_session_uid_check; -- Expected: Alice's UUID, Actual: NULL

-- Example RLS test query (returns no rows due to auth.uid() being NULL)
SELECT id, first_name, last_name, present_class FROM public.students;

RESET ALL;
Troubleshooting Steps Taken:

Full Master Script Deployment: Successfully ran a comprehensive SQL script to create schema, enable RLS, and insert data. No errors.

UUID Confirmation: All UUIDs used (request.jwt.claims.sub, table inserts) are verified correct.

Data Insertion Confirmed: Data is correctly present in all tables (e.g., public.fees).

JWT Secret Regeneration: Regenerated JWT Secret from Project Settings -> API. No change to auth.uid() output.

RLS Policies Verified: SELECT pg_policies confirms all intended RLS policies are present and correctly defined for public.fees.

Table Name Confusion Resolved: Confirmed only public.fees table exists, no duplicate.

Impact: RLS policies cannot function, as the auth.uid() dependency is not resolving.

Any help or insights from the community or the Supabase team would be greatly appreciated!
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