On Tue, Jan 18, 2022 at 6:39 PM John Naylor <john.nay...@enterprisedb.com> wrote: > Editorializing the null position in queries is not very common in my > experience. Not null is interesting since it'd be trivial to pass > constant false to the same Apply[XYZ]SortComparator() and let the > compiler remove all those branches for us. On the other hand, those > branches would be otherwise predicted well, so it might make little or > no difference.
If you were going to do this, maybe you could encode NULL directly in an abbreviated key. I think that that could be made to work if it was limited to opclasses with abbreviated keys encoded as unsigned integers. Just a thought. -- Peter Geoghegan
