Re: Possible regression in PG18 beta1

Sami Imseih <samimseih@gmail.com>

From: Sami Imseih <samimseih@gmail.com>

To: Sadeq Dousti <msdousti@gmail.com>

Cc: Christophe Courtois <christophe.courtois@dalibo.com>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>

Date: 2025-05-18T14:52:20Z

Lists: pgsql-hackers

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EXPLAIN: Always use two fractional digits for row counts.
- 95dbd827f2ed 18.0 cited

> I'm now thinking maybe the compilation options for PG 17.5 have been
> different. I'm using the default version that comes with Homebrew, but for
> PG 18, I compiled it myself. Here are the results for `select version();`
> on both:
>
> PostgreSQL 17.5 (Homebrew) on aarch64-apple-darwin24.4.0,
> compiled by Apple clang version 17.0.0 (clang-1700.0.13.3), 64-bit
>

In my tests I build from source from both the 17 stable and head branch
and use the same build options.

Why temp uses checksum, which also happens on 17 and presumably
earlier versions, is still not too clear to me.

—
Sami

>