Query: sns_topics_for_rds_db_cluster

select
  s.sns_topic_arn as topic_arn
from
  aws_rds_db_event_subscription as s,
  jsonb_array_elements_text(source_ids_list) as ids
  join aws_rds_db_cluster as c on ids = c.db_cluster_identifier
where
  c.arn = $1;