On 11/8/17 09:54, Tom Lane wrote:
> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
>> On 10/31/17 14:23, Tom Lane wrote:
>>> Why not use VOIDOID for the prorettype value?
>
>> We need a way to distinguish functions that are callable by SELECT and
>> procedures that are callable by CALL.
>
> Do procedures of this ilk belong in pg_proc at all? It seems like a large
> fraction of the attributes tracked in pg_proc are senseless for this
> purpose. A new catalog might be a better approach.
The common functionality between functions and procedures is like 98%
[citation needed], so they definitely belong there, even more so than
aggregates, for example.
> In any case, I buy none of your arguments that 0 is a better choice than a
> new pseudotype.
Well, I haven't heard any reasons for doing it differently, so I can't
judge the relative merits of either approach. Ultimately, it would be a
minor detail as far as the code is concerned, I think.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services