On Mon, Oct 7, 2024 at 12:02 PM Tom Lane <t...@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
