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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andres Freund <andres@anarazel.de>
Cc: Andrew Dunstan <andrew@dunslane.net>
Cc: exclusion@gmail.com
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17994: Invalidating relcache corrupts tupDesc inside ExecEvalFieldStoreDeForm()
Date: Sun, 02 Jul 2023 17:57:03 -0400
Message-ID: <213081.1688335023@sss.pgh.pa.us> (raw)
In-Reply-To: <20230702215420.mal2kg5a4kasme5j@awork3.anarazel.de>
References: <1583514.1688066735@sss.pgh.pa.us>
	<326723ee-ee05-35bf-06fd-e4f3afc61654@dunslane.net>
	<1610276.1688078516@sss.pgh.pa.us>
	<5316ba5d-ab3b-4ae2-6f6b-f22760932d99@dunslane.net>
	<1742513.1688129204@sss.pgh.pa.us>
	<cf24e075-0809-b9b8-4c73-48eed105b9a9@dunslane.net>
	<1749275.1688132604@sss.pgh.pa.us>
	<e56b9c00-291b-dac0-6260-74137fdaffa5@dunslane.net>
	<1800418.1688152085@sss.pgh.pa.us>
	<3878b204-e9b4-6e09-9adb-7a37b8db34a6@dunslane.net>
	<20230702215420.mal2kg5a4kasme5j@awork3.anarazel.de>

Andres Freund <andres@anarazel.de> writes:
> Isn't that going to break the assumption that the key is unique within a
> transaction?

Huh?  "abc" is "abc", no matter what.  At least if Andrew did what
I suggested (I didn't look at the patch yet).

> Separately, will this work correctly with procedures keeping values alive
> across transactions?

That might be an issue.  But couldn't we make this cache just live for
the life of the process?  It's unlikely to get large.

			regards, tom lane





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  Subject: Re: BUG #17994: Invalidating relcache corrupts tupDesc inside ExecEvalFieldStoreDeForm()
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