Horton

Re: [COMMITTERS] pgsql: Simplify plpgsql's check for simple expressions.

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Robert Haas <robertmhaas@gmail.com>
Cc: "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Date: 2017-08-15T23:23:12Z
Lists: pgsql-hackers 
I wrote:
> As I said, I think this code is based on fuzzy thinking.

... or, more charitably, it may just date from before standard_planner's
plaster-a-Gather-on-top logic worked the way it does today.  But in
any case I think it's wrong now.

			regards, tom lane

Commits

  1. Attempt to clarify comments related to force_parallel_mode.

  2. Make simpler-simple-expressions code cope with a Gather plan.

  3. Simplify plpgsql's check for simple expressions.