Re: Array constructor requires one argument

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От David Fetter
Тема Re: Array constructor requires one argument
Дата
Msg-id 20070109221302.GO25475@fetter.org
обсуждение исходный текст
Ответ на Re: Array constructor requires one argument  (Tom Lane <tgl@sss.pgh.pa.us>)
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On Tue, Jan 09, 2007 at 04:09:21PM -0500, Tom Lane wrote:
> Joe Conway <mail@joeconway.com> writes:
> > Unless we can convince ourselves that array-of-UNKNOWN is not dangerous,
> > I don't think this is easily solved.
>
> One possibility that might handle Martijn's problem is to allow the
> construct
>
>     ARRAY[]::type[]
>
> that is, you can have an empty ARRAY construct only if you immediately
> cast it to a specific array type.  The application typically knows what
> type the data is anyway, and if it just always plasters on the cast then
> the syntax would work regardless of whether there are any elements or not.

+1 for doing it this way :)

Cheers,
D
--
David Fetter <david@fetter.org> http://fetter.org/
phone: +1 415 235 3778        AIM: dfetter666
                              Skype: davidfetter

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