SELECT id, proforma_reference, status, deleted_at
FROM proformas
WHERE deleted_at IS NOT NULL
  AND status <> 'draft';

SELECT id, proforma_reference, deleted_at
FROM proformas
WHERE deleted_at IS NOT NULL
ORDER BY deleted_at DESC
LIMIT 20;

SELECT ds.document_type, ds.code, ds.next_number
FROM document_series ds
WHERE ds.document_type = 'proforma';