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Account for the effect of lossy pages when costing bitmap scans.

author Robert Haas <rhaas@postgresql.org>

2017年11月10日 21:50:50 +0000 (16:50 -0500)

committer Robert Haas <rhaas@postgresql.org>

2017年11月10日 21:50:50 +0000 (16:50 -0500)

commit 5edc63bda68a77c4d38f0cbeae1c4271f9ef4100

tree 214cd7c2d8fe70017061fb3e4fc803437d78f19a tree

parent 0c98d0dd5c85ce0c8485ae1a8351a26b83c4338b commit | diff

Account for the effect of lossy pages when costing bitmap scans.

Dilip Kumar, reviewed by Alexander Kumenkov, Amul Sul, and me.
Some final adjustments by me.

Discussion: http://postgr.es/m/CAFiTN-sYtqUOXQ4SpuhTv0Z9gD0si3YxZGv_PQAAMX8qbOotcg@mail.gmail.com

src/backend/nodes/tidbitmap.c diff | blob | blame | history

src/backend/optimizer/path/costsize.c diff | blob | blame | history

src/include/nodes/tidbitmap.h diff | blob | blame | history

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