UPDATE sop_versions
SET status = 'draft', reviewed_by = NULL
WHERE status = 'reviewing';

UPDATE sops
SET status = CASE
  WHEN EXISTS (
    SELECT 1
    FROM sop_versions
    WHERE sop_versions.sop_id = sops.id
      AND sop_versions.status = 'published'
  ) THEN 'published'
  ELSE 'draft'
END
WHERE status = 'reviewing';