Re: amvalidate(): cache lookup failed for operator class 123

On Thu, May 13, 2021 at 02:22:16PM -0400, Tom Lane wrote:
> Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
> > Per sqlsmith.
> > postgres=# select amvalidate(123);
> > ERROR: cache lookup failed for operator class 123
> > postgres=# \errverbose
> > ERROR: XX000: cache lookup failed for operator class 123
> > LOCATION: amvalidate, amapi.c:125
>
> > The usual expectation is that sql callable functions should return null rather
> > than hitting elog().
>
> Meh. I'm not convinced that that position ought to apply to amvalidate.
> Under what circumstances would you be calling that on an opclass that
> might be about to be dropped?

Sure, no problem. I'm just passing on the message :)

--
Justin