Select
case when nn=100000000000 then fio else ‘Пусто’ end as Fio2,
case when nn=100000000000 then Inn else ‘Пусто’ end as Inn2
From
(
Select distinct Fio, Inn, IDRow_In_Group as NN From table
Union all
Select distinct Fio, Inn, 100000000000 as NN From table
) q
Order by fio,inn,NN
--
Получается то же самое что и в предыдущем ответе