Re: Use merge-based matching for MCVs in eqjoinsel

Ilia Evdokimov <ilya.evdokimov@tantorlabs.com> writes:
> I’ve attached v3 of the patch. This version adds a check for NULL values 
> when comparing MCV entries, ensuring correctness in edge cases.

Um ... what edge cases would those be?  We do not put NULL into
MCV arrays.

            regards, tom lane