Re: Statistics Import and Export

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Nathan Bossart <nathandbossart(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Corey Huinker <corey(dot)huinker(at)gmail(dot)com>, Jeff Davis <pgsql(at)j-davis(dot)com>, jian he <jian(dot)universality(at)gmail(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Statistics Import and Export
Date: 2024-11-27 17:01:50
Message-ID: Z0dQfoMNfXI1TMHa@momjian.us
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On Wed, Nov 27, 2024 at 11:44:25AM -0500, Tom Lane wrote:
> Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> > On 2024-Nov-27, Bruce Momjian wrote:
> >> Would there be a default?
>
> > There would be no default. Running with no option given would raise an
> > error. The point is: you want to break scripts currently running
> > --analyze-in-stages so that they can make a choice of which of these two
> > modes to run. Your proposal (as I understand it) is to remove the
> > --analyze-in-stages option and add two other options. My proposal is to
> > keep --analyze-in-stages, but require it to have a specifier of which
> > mode to run. Both achieve what you want, but I think mine achieves it
> > in a cleaner way.
>
> I do not like the idea of breaking existing upgrade scripts,
> especially not by requiring them to use a parameter that older
> vacuumdb versions will reject. That makes it impossible to have a
> script that is version independent. I really doubt that there is any
> usability improvement to be had here that's worth that.
>
> How about causing "--analyze-in-stages" (as currently spelled) to
> be a no-op? We could keep the behavior available under some other
> name.

Uh, I guess we could do that, but we should emit something like
"--analyze-in-stages option ignored".

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

When a patient asks the doctor, "Am I going to die?", he means
"Am I going to die soon?"

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