Query: lambda_function_dead_letter_config_status

select
  dead_letter_config_status,
  count(*)
from (
  select
    case when dead_letter_config_target_arn is not null then
      'configured'
    else
      'not configured'
    end dead_letter_config_status
  from
    aws_lambda_function) as t
  group by
    dead_letter_config_status
  order by
    dead_letter_config_status desc;