Morning Dan,
where rownum between 10000 and 19999
I get zip. 
That's because rownum is assigned, starting at 1 and incrementing by 1,
only for rows in the final output set.
What you need is something like:
select * from (
select rownum as r, table.stuff
from table
where ....
) where r between 10000 and 19999;
Oracle "knows" about this construct and will "short circuit" the inner
select when it has enough rows. Unless, of course, you have an ORDER BY
clause in which case it must read everything.
Although if I was paging through a huge table in this manner, I'd
probably parameterise the thing with binds, parse once, execute many!
select * from (
select rownum as r, table.stuff
from table
where ....
) where r between :first and (:first + 9998); -- Yes, 9998 is correct!
HTH
Cheers,
Norm. [TeamT]
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