text: --CREATE TYPE UserRole AS ENUM ('unprivileged', 'admin', 'moderator');
  
  CREATE TABLE users (
      uuid UUID PRIMARY KEY NOT NULL Default gen_random_uuid(),
      user_name VARCHAR UNIQUE NOT NULL,
      display_name VARCHAR NOT NULL,
      password_hash VARCHAR NOT NULL,
      locked TIMESTAMP,
      failed_login_count Integer NOT NULL,
      banned BOOLEAN NOT NULL,
      roles Integer[] NOT NULL
    -- updated_at TIMESTAMP NOT NULL DEFAULT NOW()
  );
  
  -- SELECT diesel_manage_updated_at('users');