Horton

Re: Query result differences between PostgreSQL 17 vs 16

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

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Bruce Momjian <bruce@momjian.us>
Cc: Richard Guo <guofenglinux@gmail.com>, David Rowley <dgrowleyml@gmail.com>, Ronald Cruz <cruz@rentec.com>, pgsql-bugs@lists.postgresql.org, Peter Ford <pford@rentec.com>, "Aaron J. Garcia" <agarcia@rentec.com>
Date: 2025-03-11T22:19:49Z
Lists: pgsql-bugs 
Bruce Momjian <bruce@momjian.us> writes:
> Uh, if we fixed this for NULL optimization and backpatched, should we do
> the same for:
> 	Parameter NOT NULL to CREATE DOMAIN not the same as CHECK (VALUE IS NOT NULL)
> 	https://www.postgresql.org/message-id/flat/173591158454.714.7664064332419606037%40wrigleys.postgresql.org

This is unrelated to that.

			regards, tom lane

Commits

  1. Avoid NullTest deduction for clone clauses

  2. Add better handling of redundant IS [NOT] NULL quals