Re: between '' and 'ZZZ'

Leo Baltus <lbaltus_at_my-deja.com> skrev i artiklen <8bvje3$mn9$1_at_nnrp1.deja.com>...
> This is probably a newbe question, but anyway:
>
> Can somebody please explain the following :
>
> select * from table where col1 between '' and 'ZZZ'
>
> it gives no result, but when I try:
>
> select * from table where col1 between ' ' and 'ZZZ'
>
> (the difference is one space in the 1 argument)
> I get the result set I expected.

Oracle treats the empty string as NULL.
The first select is thus
select * from table where col1 between NULL and 'ZZZ'

/Peter Laursen Received on Thu Mar 30 2000 - 00:00:00 CST