Zkuste toto :-
Select *
from
(
Select name,surname, 1 as filter
from Table1
Union all
Select name,surname , 2 as filter
from Table2
)
order by filter
Zkuste toto :-
Select *
from
(
Select name,surname, 1 as filter
from Table1
Union all
Select name,surname , 2 as filter
from Table2
)
order by filter