Re: Window function optimisation, allow pushdowns of items matching PARTITION BY clauses

From: Vik Fearing <vik(dot)fearing(at)dalibo(dot)com>
To: David Rowley <dgrowley(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Thomas Mayer <thomas(dot)mayer(at)student(dot)kit(dot)edu>
Subject: Re: Window function optimisation, allow pushdowns of items matching PARTITION BY clauses
Date: 2014-06-26 23:01:22
Message-ID: 53ACA642.8040804@dalibo.com
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On 06/21/2014 02:03 PM, David Rowley wrote:
> I'm marking this Waiting on Author pending discussion on pushing down
> entire expressions, but on the whole I think this is pretty much ready.
>
>
> As I said above, I don't think playing around with that code is really
> work for this patch. It can be done later in another patch if people
> think it would be useful.

I tend to agree.

This latest patch is ready for a committer to look at now. The weird
comments have been changed, superfluous regression tests removed, and
nothing done about expression pushdown per (brief) discussion.
--
Vik

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