From: Tom Lane <tgl@sss.pgh.pa.us>
To: rekgrpth@gmail.com
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17147: Why concat_ws and concat is not immutable?
Date: Mon, 16 Aug 2021 10:22:06 -0400
Message-ID: <880379.1629123726@sss.pgh.pa.us> (raw)
In-Reply-To: <17147-11e30c950a4faae8@postgresql.org>
References: <17147-11e30c950a4faae8@postgresql.org>
PG Bug reporting form <noreply@postgresql.org> writes:
> Why concat_ws and concat is not immutable?
Those invoke datatype-specific output functions, which aren't guaranteed
to be immutable. Maybe ideally they would be, but we have too much
historical baggage --- for example, timestamp_out has always depended
on DateStyle.
regards, tom lane
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To: pgsql-bugs@postgresql.org
Cc: tgl@sss.pgh.pa.us, rekgrpth@gmail.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17147: Why concat_ws and concat is not immutable?
In-Reply-To: <880379.1629123726@sss.pgh.pa.us>
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