Magnus Hagander <magnus@hagander.net> writes:
> While looking over the statistics-for-functions patch
> (http://archives.postgresql.org/pgsql-patches/2008-03/msg00300.php), I
> came back to a thought I've had before - why do we keep one function
> per column for pgstat functions, instead of using a set returning
> function? Is there some actual reason for this, or is it just legacy
> from a time when it was (much) harder to write SRFs?
I think it's so that you can build your own stats views instead of being
compelled to select the data someone thought was good for you.
regards, tom lane