On Mon, Oct 7, 2024 at 12:02 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Oy. I don't agree with that *at all*. An "optimization" that changes
> query semantics is going to be widely seen as a bug.
I don't believe that I said otherwise?
It's just rather unclear what query semantics really mean here, in
detail. At least to me. But it's obvious that (for example) it would
not be acceptable if a cast were to visibly fail, where that hadn't
happened before.
--
Peter Geoghegan