Re: [HACKERS] Tweak cost_merge_append to reflect 7a2fe9bd?

2016-11-05 Thread Tom Lane
Thomas Munro writes: > As noted in a nearby review of some similar code[1], commit 7a2fe9bd > made merge append very slightly more efficient, but nobody told > cost_merge_append about the change. I doubt it makes much difference > to the final cost in practice but I figured it might be worth > co

[HACKERS] Tweak cost_merge_append to reflect 7a2fe9bd?

2016-11-04 Thread Thomas Munro
Hi As noted in a nearby review of some similar code[1], commit 7a2fe9bd made merge append very slightly more efficient, but nobody told cost_merge_append about the change. I doubt it makes much difference to the final cost in practice but I figured it might be worth correcting the comment. Does