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Add lesson 40: Roles and privileges#100

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Add lesson 40: Roles and privileges#100
exekias wants to merge 1 commit into
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lesson/40-roles-and-privileges

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@exekias

@exekias exekias commented Jul 2, 2026

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Adds Roles and privileges (roadmap item 01-roles-and-privileges) — the new Module 10: Expert & operations.

Summary

Postgres has one concept for users and groups — roles — and two ways to control access: GRANT/REVOKE on objects and row-level security policies.

Check

One query-returns check (rls-enabled) — the learner enables RLS and adds an owner-based policy, verified via pg_class.relrowsecurity.

Verified end-to-end against a non-superuser Postgres 16. npm run lessons:validate (34/34) and next build both pass.

Part of #6

🤖 Generated with Claude Code

Part of #6

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Project Deployment Actions Updated (UTC)
learn-postgres Ready Ready Preview Jul 2, 2026 3:07pm

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