Re: WIP: Upper planner pathification - Mailing list pgsql-hackers

From Alvaro Herrera
Subject Re: WIP: Upper planner pathification
Date
Msg-id 20160309170755.GA977705@alvherre.pgsql
Whole thread Raw
In response to Re: WIP: Upper planner pathification  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: WIP: Upper planner pathification
Re: WIP: Upper planner pathification
List pgsql-hackers
Tom Lane wrote:
> Amit Kapila <amit.kapila16@gmail.com> writes:

> > Without setting max_parallel_degree, it works fine and generate the
> > appropriate results.  Here the issue seems to be that the code in
> > grouping_planner doesn't apply the required PathTarget to Path below Gather
> > Path due to which when we generate target list for scan plan,
> 
> Yeah, fixed.  I had assumed that the existing coding in create_gather_plan
> was OK, because it looked like it was right for a non-projecting node.
> But actually Gather can project (why though?), so it's not right.

This looks related:
https://www.postgresql.org/message-id/CA%2BTgmoai9Ruhwk61110rY4cNAzoO6npsFEOaEKjM7Zz8i3evHg%40mail.gmail.com

-- 
Álvaro Herrera                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services



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