Oracle FETCH FIRST 1 ROW dengan pernyataan UNION ALL

Letakkan saja setiap bagian dalam tanda kurung. Bekerja di 12.2, bagaimanapun:

( Select * From tabl1 where Date = '04-MAR-2020' FETCH FIRST 1 ROW )
UNION ALL
( Select * From tabl1 where Date = '05-MAR-2020' FETCH FIRST 1 ROW )

Permintaan pengujian saya yang sebenarnya, bagi siapa pun yang tertarik adalah ini:

(select   object_name 
 from     user_objects 
 where    object_type = 'TABLE' 
 order by object_name 
 fetch first 1 row only)
UNION ALL
(select   object_name 
 from     user_objects 
 where    object_type = 'VIEW' 
 order by object_name 
 fetch first 1 row only);