Re: export FUNC_MAX_ARGS as a read-only GUC variable (was:

Peter Eisentraut wrote:
> Tom Lane writes:
>
> > One could make a good case that INDEX_MAX_KEYS should be exported along
> > with FUNC_MAX_ARGS, rather than letting people write client code that
> > assumes they are the same.
>
> You can determine these values by looking into the system catalogs.

How, count?  Seems we should give an easy API.

> > I was intending to propose that we also export the following as
> > read-only variables:
> >     * NAMEDATALEN
>
> And this as well.

Again, why not make it easy.

> >     * BLCKSZ
>
> Why would anyone be interested in that?

Performance/admin tools might need this --- you need it to get the disk
size based on the number of pages recorded in pg_class.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073