Query: sns_topics_for_rds_db_instance

select
  s.sns_topic_arn
from
  aws_rds_db_event_subscription as s,
  jsonb_array_elements_text(source_ids_list) as ids
  join aws_rds_db_instance as i
  on ids = i.db_instance_identifier
where
  i.arn = $1
  and i.account_id = split_part($1, ':', 5)
  and i.region = split_part($1, ':', 4)