Date: Thu, 10 Apr 2025 10:48:40 -0500
From: Nico Williams <nico@cryptonector.com>
To: Adrian Klaver <adrian.klaver@aklaver.com>
Cc: Laurenz Albe <laurenz.albe@cybertec.at>, Olleg Samoylov <splarv@ya.ru>,
	"pgsql-generallists.postgresql.org" <pgsql-general@lists.postgresql.org>
Subject: Re: Interesting case of IMMUTABLE significantly hurting performance
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On Wed, Apr 09, 2025 at 02:43:11PM -0700, Adrian Klaver wrote:
> On 4/9/25 14:21, Nico Williams wrote:
> > That to_char is not immutable is not documented though.  Though it's
> > clear when looking at the docs for the `jsonb_.*_tz()` functions.
> 
> From here:
> 
> https://www.postgresql.org/docs/current/catalog-pg-proc.html
> 
> select proname, provolatile, prosrc  from pg_proc where proname='to_char';
> [...]

I'm surprised to see that counted as docs, but good to know.