Re: Common Table Expressions (WITH RECURSIVE) patch

From: "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com>
To: "Jeff Davis" <pgsql(at)j-davis(dot)com>
Cc: "Robert Haas" <robertmhaas(at)gmail(dot)com>, "Tatsuo Ishii" <ishii(at)sraoss(dot)co(dot)jp>, ishii(at)postgresql(dot)org, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Common Table Expressions (WITH RECURSIVE) patch
Date: 2008-09-09 17:32:31
Message-ID: 162867790809091032u52b38f93j2a47aed3d49acc3e@mail.gmail.com
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2008/9/9 Jeff Davis <pgsql(at)j-davis(dot)com>:
> On Tue, 2008-09-09 at 18:51 +0200, Pavel Stehule wrote:
>> hmm. I solve similar problem in grouping sets :( etc
>>

I have special executor node - feeder, it hold one tuple and others
nodes read from this node. It's usable for hash aggregates.

Pavel

plan is like:

grouping sets
--> seq scan ...
--> hash aggg
--> feeder
--> hash agg
--> feeder

>
> How did you solve it?
>
> Regards,
> Jeff Davis
>
>

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