Edmund Horner <ejr...@gmail.com> writes: > On Sat, 22 Dec 2018 at 07:10, Tom Lane <t...@sss.pgh.pa.us> wrote: >> I'm not entirely sure why you're bothering; surely nulltestsel is >> unrelated to what this patch is about?
> I found that it made a difference with selectivity of range comparisons,
> because clauselist_selectivity tries to correct for it (clausesel.c:274):
Oh, I see.
> I guess we could have a standalone patch to add this for all system columns?
+1
regards, tom lane
