Edmund Horner <[email protected]> writes: > On Sat, 22 Dec 2018 at 07:10, Tom Lane <[email protected]> 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
