Re: Re: Suggestions for the best strategy to emulate returning multiple sets of results

From: Bret Stern <bret_stern(at)machinemanagement(dot)com>
To: Seref Arikan <serefarikan(at)kurumsalteknoloji(dot)com>
Cc: PG-General Mailing List <pgsql-general(at)postgresql(dot)org>
Subject: Re: Re: Suggestions for the best strategy to emulate returning multiple sets of results
Date: 2012-10-10 14:58:01
Message-ID: 1349881081.30748.1.camel@fedora13
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create a ramdrive
On Wed, 2012-10-10 at 14:27 +0100, Seref Arikan wrote:
> Hi Merlin,
> Thanks for the response. At the moment, the main function is creating
> two temp tables that drops on commit, and python functions fills
> these. Not too bad, but I'd like to push these temp tables to ram,
> which is a bit tricky due to not having a direct method of doing this
> with postgresql. (a topic that has been discussed in the past in this
> mail group)
>
> The global variable idea is interesting though. I have not encountered
> this before, is it the global dictionary SD/GD mentioned here:
> http://www.postgresql.org/docs/9.0/static/plpython-sharing.html ?
> It may help perform the expensive transformations once and reuse the
> results.
>
> Kind regards
> Seref
>
> On Wed, Oct 10, 2012 at 2:06 PM, Merlin Moncure <mmoncure(at)gmail(dot)com>
> wrote:
> On Mon, Oct 8, 2012 at 4:59 PM, Seref Arikan
> <serefarikan(at)kurumsalteknoloji(dot)com> wrote:
> > Thanks Merlin,
> > I've tried arrays but plpython does not support returning
> arrays of custom
> > db types (which is what I'd need to do)
>
>
>
> hm -- yeah. can your custom types be broken down into plain
> SQL types
> (that is, composite types?). maybe stash the results in
> global
> variable and return it in two calls, or insert into into a
> tempt
> table that drops on commit?
>
> merlin
>

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