Re: Snapshot too old logging

Magnus Hagander wrote:
> On Tue, Nov 15, 2016 at 8:22 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>
> > On Tue, Nov 15, 2016 at 2:21 PM, Kevin Grittner <kgrittn@gmail.com> wrote:

> > > That particular language would be misleading.  All we know about
> > > the page is that it was modified since the referencing (old)
> > > snapshot was taken.  We don't don't know in what way it was
> > > modified, so we must assume that it *might* have been pruned of
> > > rows that the snapshot should still be able to see.
> >
> > Oh, yeah.  So maybe "may have already been removed".
>
> Just to be clear, you're suggesting 'One or more rows may have already been
> removed from "%s"?

Focusing on the relation itself for a second, I think the name should be
schema-qualified.  What about using errtable()?

Can this happen for relation types other than tables, say materialized
views?  (Your suggested wording omits relation type so it wouldn't be
affected, but it's worth considering I think.)