From: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
---|---|
To: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: polymorphic parameters limits - correct solution? |
Date: | 2018-01-16 02:21:44 |
Message-ID: | 20180116022144.6tw6cy26l5ddbhqv@alvherre.pgsql |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
Pavel Stehule wrote:
> Hi
>
> I played with introduction of new pair of Polymorphic Parameters - like
> anyXelement and anyXarray. Now, I don't think so enhancing PP is good way
> now. Without significant redesign there are not practical append more code
> there.
>
> Why this is a issue? The extension's authors are not able to specify result
> type without enumeration of all possible function signatures. Similar
> situation is in argument processing - there are workaround based on "any"
> type.
I cannot offer any advice for your "helper" (because I don't really
understand what the helper does), but I am reminded of this old thread:
https://www.postgresql.org/message-id/flat/20090908161210.GD549%40alvh.no-ip.org
... in which datatype "any" was one of the offered tools, and also from
whence the format() function sprung. Nice ...
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
From | Date | Subject | |
---|---|---|---|
Next Message | Robert Haas | 2018-01-16 02:34:05 | Re: [HACKERS] Restricting maximum keep segments by repslots |
Previous Message | Tom Lane | 2018-01-16 02:17:39 | Re: [HACKERS] postgres_fdw bug in 9.6 |