Horton

Re: parallelize queries containing initplans

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Haribabu Kommi <kommi.haribabu@gmail.com>, Kuntal Ghosh <kuntalghosh.2007@gmail.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2017-10-11T15:54:30Z
Lists: pgsql-hackers 
On Mon, Oct 9, 2017 at 5:56 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> How about always returning false for PARAM_EXTERN?

Yeah, I think that's what we should do.  Let's do that first as a
separate patch, which we might even want to back-patch, then return to
this.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

  1. Pass InitPlan values to workers via Gather (Merge).

  2. Track in the plan the types associated with PARAM_EXEC parameters.

  3. Force rescanning of parallel-aware scan nodes below a Gather[Merge].