Empty iterable as query result

If a query on an iterable does not return any elements, for example here:

s = (numbers: 1, 2, 3)
print(s where numbers > 3)
t = ((numbers: 1, 2, 3))
print(t where numbers > 3)

then an error occurs:

Unknown error: // --> print(s where numbers > 3) <--

It should return an empty iterable. Similar errors occur if we take a zero-size slice, e.g. print(t[0:0]) (should be empty table).

Also the following do not work:

• print(t[-1]) raises Unknown error instead of returning (3).
• print(s[-1]) returns -1 and Unknown error but should be 3
• print(s[3]) returns 3 and Unknown error (should only be some more specific error like index error)
• print(s[4]) returns 4 and Unknown error (should only be some more specific error like index error)