"Jan de Visser" <jdevisser(at)digitalfairway(dot)com> writes:
> Any reason why this couldn't appear in the core of some future
> version?
You didn't read to the end of my post ;-). If a rownum() function
like this didn't have any gotchas, I'd be in favor of putting it in,
but I don't really want to set the behavior in stone just yet.
regards, tom lane