Re: multiple results from a function

From: Merlin Moncure <mmoncure(at)gmail(dot)com>
To: James Harper <james(dot)harper(at)bendigoit(dot)com(dot)au>
Cc: "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: multiple results from a function
Date: 2014-03-03 15:13:16
Message-ID: CAHyXU0wHozNz7f57dT1hsP=Ag7gdWoPcnK=Jd-r7z_Df4eC9tg@mail.gmail.com
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On Thu, Feb 27, 2014 at 6:23 PM, James Harper
<james(dot)harper(at)bendigoit(dot)com(dot)au> wrote:
> I see that I can use PQgetResult to get results from an async query, and this allows for multiple results, presumably when the query is like "SELECT 123, 456; SELECT 'ABC', 'DEF';". Is there a way for a C function, using SPI, to send result sets without waiting for completion and returning a potentially huge set of results right at the end of the function?
>
> Failing that, is there a way for a C function to send to STDOUT in the same way that a COPY (...) TO STDOUT would?

Why does this have to be an SPI function? Maybe a little more context
here would help.

merlin

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