pg.ddx.io pgsql-hackers@postgresql.org mailing list archive help / color / mirror / Atom feed From: Jeff Davis <pgsql@j-davis.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Corey Huinker <corey.huinker@gmail.com>
Cc: Magnus Hagander <magnus@hagander.net>
Cc: Stephen Frost <sfrost@snowman.net>
Cc: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Cc: Matthias van de Meent <boekewurm+postgres@gmail.com>
Cc: Peter Smith <smithpb2250@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Cc: Tomas Vondra <tomas.vondra@enterprisedb.com>
Subject: Re: Statistics Import and Export
Date: Tue, 02 Apr 2024 14:59:12 -0700
Message-ID: <06286ee47fa4b06b6e7f08da21958d7e35525ed4.camel@j-davis.com> (raw )
In-Reply-To: <1841621.1712093467@sss.pgh.pa.us >
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On Tue, 2024-04-02 at 17:31 -0400, Tom Lane wrote:
> And that means that we don't need the sending
> side to know the element type anyway.
We need to get the original element type on the import side somehow,
right? Otherwise it will be hard to tell whether '{1, 2, 3, 4}' has
element type "int4" or "text", which affects the binary representation
of the anyarray value in pg_statistic.
Either we need to get it at export time (which seems the most reliable
in principle, but problematic for older versions) and pass it as an
argument to pg_set_attribute_stats(); or we need to derive it reliably
from the table schema on the destination side, right?
Regards,
Jeff Davis
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To: pgsql-hackers@postgresql.org
Cc: pgsql@j-davis.com, tgl@sss.pgh.pa.us, corey.huinker@gmail.com, magnus@hagander.net, sfrost@snowman.net, ashutosh.bapat.oss@gmail.com, boekewurm+postgres@gmail.com, smithpb2250@gmail.com, pgsql-hackers@lists.postgresql.org, tomas.vondra@enterprisedb.com
Subject: Re: Statistics Import and Export
In-Reply-To: <06286ee47fa4b06b6e7f08da21958d7e35525ed4.camel@j-davis.com>
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