From: Andres Freund <andres@anarazel.de>
To: Peter Geoghegan <pg@heroku.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: hlinnaka <hlinnaka@iki.fi>
Cc: Jeff Janes <jeff.janes@gmail.com>
Cc: Stephen Frost <sfrost@snowman.net>
Cc: Dean Rasheed <dean.a.rasheed@gmail.com>
Cc: Bruce Momjian <bruce@momjian.us>
Cc: Pg Hackers <pgsql-hackers@postgresql.org>
Subject: Re: INSERT ... ON CONFLICT UPDATE/IGNORE 4.0, parser/executor stuff
Date: Mon, 27 Apr 2015 16:28:49 +0200
Message-ID: <20150427142849.GD7296@alap3.anarazel.de> (raw)
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On 2015-04-26 18:02:06 -0700, Peter Geoghegan wrote:
> * So far, there has been a lack of scrutiny about what the patch does
> in the rewriter (in particular, to support the EXCLUDED.* pseudo-alias
> expression) and optimizer (the whole concept of an "auxiliary"
> query/plan that share a target RTE, and later target ResultRelation).
> If someone took a close look at that, it would be most helpful.
> ruleutils.c is also modified for the benefit of EXPLAIN output. This
> all applies only to the ON CONFLICT UPDATE patch. A committer could
> push out the IGNORE patch before this was 100% firm.
I'm far from an expert on the relevant regions; but I'm starting to look
nonetheless. I have to say that on a preliminary look it looks more
complicated than it has to.
Tom, any chance you could have a look at the parse->analsys->executor
transformations?
Greetings,
Andres Freund
--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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Cc: andres@anarazel.de, pg@heroku.com, tgl@sss.pgh.pa.us, hlinnaka@iki.fi, jeff.janes@gmail.com, sfrost@snowman.net, dean.a.rasheed@gmail.com, bruce@momjian.us, pgsql-hackers@postgresql.org
Subject: Re: INSERT ... ON CONFLICT UPDATE/IGNORE 4.0, parser/executor stuff
In-Reply-To: <20150427142849.GD7296@alap3.anarazel.de>
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