Postgres Permissions Explained: Roles, Schemas, and GRANT Done Right
You granted SELECT on all tables, deployed to production, and hit permission denied on a new table. That's because GRANT SELECT ON ALL TABLES only affects tables that exist right now — future tables aren't covered unless you set default privileges.
This video whiteboards the actual Postgres privilege model: how roles work (not like MySQL groups), why schemas add a permission layer most people miss, the difference between granting on existing objects versus setting policies for future ones, and the five-point checklist you need every time you create a role. We'll cover USAGE versus SELECT, sequence grants for SERIAL columns, schema ownership patterns, and why ALTER DEFAULT PRIVILEGES is the command that prevents the 'future table' bug.
For backend engineers, DBAs, and anyone managing Postgres permissions who's tired of permission denied errors in production. If you've ever wondered why your grants didn't stick or why MySQL permission patterns don't translate, this is the model you need.
Chapters:
0:00 Intro
0:39 Roles vs Users: The First Misconception
2:04 Schema Ownership and the Public Trap
3:23 The ALL TABLES Gotcha
6:10 Ownership and the Superuser Shortcut
7:35 The One Command MySQL Migrants Forget
9:17 Get a free health report
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