Horton

Re: BUG #15577: Query returns different results when executed multiple times

David Rowley <david.rowley@2ndquadrant.com>

View thread View on postgr.es
From: David Rowley <david.rowley@2ndquadrant.com>
To: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Bartosz Polnik <bartoszpolnik@gmail.com>, PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Date: 2019-01-08T00:47:56Z
Lists: pgsql-bugs 
On Tue, 8 Jan 2019 at 13:43, Thomas Munro <thomas.munro@enterprisedb.com> wrote:
> It's as if it thought it was executing a semi-join.

EXPLAIN VERBOSE would show the inner_unique flag. If that's set it
would act as a semi-join.


-- 
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

Commits

  1. Avoid sharing PARAM_EXEC slots between different levels of NestLoop.