| From: | Joe Conway <mail(at)joeconway(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Merlin Moncure <mmoncure(at)gmail(dot)com>, Corey Huinker <corey(dot)huinker(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com>, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com> |
| Subject: | Re: dblink: add polymorphic functions. |
| Date: | 2015-07-30 04:41:29 |
| Message-ID: | 55B9AAF9.4010206@joeconway.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
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On 07/29/2015 07:58 PM, Tom Lane wrote:
> We can definitely do
>
> SELECT x::any_single_unreserved_word(some_expression) FROM ...
>
> because that's actually not something the grammar needs to
> distinguish from type-with-a-typmod; we can deal with the special
> case in LookupTypeName. It's just a matter of picking a word
> people like.
What about just TYPE then?
SELECT x::TYPE(some_expression) FROM ...
SELECT CAST (x AS TYPE(some_expression)) FROM ...
- --
Joe Conway
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