Query: redshiftserverless_namespace_no_default_admin_username

select
  namespace_arn as resource,
  case
    when admin_username = 'admin' then 'alarm'
    else 'ok'
  end as status,
  case
    when admin_username = 'admin' then title || ' uses default admin username.'
    else title || ' not uses default admin username.'
  end as reason
  
  , region, account_id
from
  aws_redshiftserverless_namespace;