Re: Stability of queryid in minor versions

On Sun, Apr 14, 2024 at 9:01 PM David Rowley <dgrowleyml(at)gmail(dot)com> wrote:
> On Mon, 15 Apr 2024 at 11:47, Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
> > Technically we don't promise that WAL records won't change in minor
> > versions. In fact, the docs specifically state that the format of any
> > WAL record might change, and that users should upgrade standbys first
> > on general principle (though I imagine few do). We try hard to avoid
> > changing the format of WAL records in point releases, of course, but
> > strictly speaking there is no guarantee. This situation seems similar
> > (though much lower stakes) to me. Query normalization isn't perfect --
> > there's a trade-off.

> Where does WAL fit into this? And why would a WAL format change the
> computed value?

It doesn't. I just compared the two situations, which seem analogous.

--
Peter Geoghegan