Re: problem of geometric operator in v8.2.1 - Mailing list pgsql-hackers

"Ioseph Kim" <pgsql-kr@postgresql.or.kr> writes:
> when @-@ operator used at path type,
> below query maybe returns 1.
> because this path is just line.

No, because it's a closed path, so it's a loop from (0,0) to (1,0)
and back again.  If you don't want to count the return segment,
use an open path.
        regards, tom lane