| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "David E(dot) Wheeler" <david(at)kineticode(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: RfD: more powerful "any" types |
| Date: | 2009-09-09 17:11:57 |
| Message-ID: | 20090909171157.GO4132@alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> In an example like
>
> create function foo (anyelement, anyelement2, anyelement2)
> returns anyarray2
>
> the second and third arguments would be tied to be of the same type,
> and the result would be an array of that type; whereas the first
> argument's type is unrelated.
Another possible example is sprintf:
create function sprintf(text, anyelement, anyelement2, anyelement3, ...)
returns text
In order for this to work in general, we'd need FUNC_MAX_ARGS different
types, which is currently defined as 100 in our code.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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