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From: David Fetter <david@fetter.org>
To: Andreas Karlsson <andreas@proxel.se>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Andrew Gierth <andrew@tao11.riddles.org.uk>
Cc: Pg Hackers <pgsql-hackers@postgresql.org>
Subject: Re: Early WIP/PoC for inlining CTEs
Date: Wed, 3 Oct 2018 17:57:20 +0200
Message-ID: <20181003155720.GG25294@fetter.org> (raw)
In-Reply-To: <e02af96a-3e25-5de4-09a4-a7ebf3452184@proxel.se>
References: <87sh48ffhb.fsf@news-spur.riddles.org.uk>
	<20180725054236.GB17411@fetter.org>
	<87bmavfjhy.fsf@news-spur.riddles.org.uk>
	<20180725191447.GE17411@fetter.org>
	<CAEepm=0MKV3MnR4Dn5RkXsK+RnmHEFitqiG4PcBhXtBK4JOoWw@mail.gmail.com>
	<20180727081058.GN17411@fetter.org>
	<dccb37dd-2f52-dbd7-a4c4-72a5853f4838@proxel.se>
	<e02af96a-3e25-5de4-09a4-a7ebf3452184@proxel.se>

On Tue, Oct 02, 2018 at 12:03:06PM +0200, Andreas Karlsson wrote:
> Hi,
> 
> Here is an updated patch which adds some simple syntax for adding the
> optimization barrier. For example:
> 
> WITH x AS MATERIALIZED (
>    SELECT 1
> )
> SELECT * FROM x;
> 
> Andreas

This is great!

Is there any meaningful distinction between "inlining," by which I
mean converting to a subquery, and predicate pushdown, which
would happen at least for a first cut, at the rewrite stage?

Best,
David.
-- 
David Fetter <david(at)fetter(dot)org> http://fetter.org/
Phone: +1 415 235 3778

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