Okay, since you insist on us taking a shot in the dark, here is mine:

'

-- Using your sample data posted above

declare @pointfrom int = 2,

@pointto int = 10;

select * from #t;

select a.*

from #t a

where

a.t >= @pointfrom and

a.f <= @pointto;

Output from the first query:

ft

15

56

79

1011

1112

Output from the second query: -- is this what you are looking for?

ft

15

56

79

1011