Horton

Re: Query result differences between PostgreSQL 17 vs 16

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

View thread View on postgr.es
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Richard Guo <guofenglinux@gmail.com>
Cc: Bruce Momjian <bruce@momjian.us>, 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: 2025-03-03T15:22:31Z
Lists: pgsql-bugs 
Richard Guo <guofenglinux@gmail.com> writes:
> Here is an updated patch, which also includes the test case you found
> proving the no-clone-quals limitation in restriction_is_always_false
> is also needed.

LGTM.

			regards, tom lane

Commits

  1. Avoid NullTest deduction for clone clauses

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