Re: BUG #17669: Invalid TOAST pointer in PL/pgSQL variable

On 28.10.2022 16:43, Tom Lane wrote:
> PG Bug reporting form <noreply(at)postgresql(dot)org> writes:
>> postgres=# select f();
>> ERROR: missing chunk number 0 for toast value 24727 in pg_toast_24722
>
> To prevent that, every fetch into a plpgsql variable would have
> to immediately detoast the value, in case somebody did something
> as weird as dropping/truncating the table later in the function.
> That's an awfully expensive bit of protection. We do in fact
> do it like that in procedures (more specifically, in non-atomic
> contexts), so a possible workaround for you is to make this a
> procedure not a function. I'm disinclined to change it otherwise.
Thank you for explaining.

--
Sergey Shinderuk https://postgrespro.com/