On 27/01/2008, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com> writes:
> > is it means " some PostgreSQL specific"?
>
> I think the original idea was P-for-Parser. It's just there for tokens
> whose macros would otherwise be likely to collide with other symbols.
>
> regards, tom lane
>
ok. unterstand
thank you
Pavel Stehule