Re: Re: xReader, double-effort (was: Temporary tables under hot standby) - Mailing list pgsql-hackers

Robert Haas <robertmhaas@gmail.com> writes:
> On Sun, Apr 29, 2012 at 6:00 PM, Hannu Krosing <hannu@2ndquadrant.com> wrote:
>> So you basically need a large part of postgres for reliably making sense
>> of WAL.

> Agreed, but I think that's a problem we need to fix and not a
> tolerable situation at all.  If a user can create a type-output
> function that goes and looks at the state of the database to determine
> what to output, then we are completely screwed, because that basically
> means you would need to have a whole Hot Standby instance up and
> running just to make it possible to run type output functions.

You mean like enum_out?  Or for that matter array_out, record_out,
range_out?
        regards, tom lane