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Advance multiple array keys rightmost-first instead of leftmost-first

author Tom Lane <tgl@sss.pgh.pa.us>

2008年3月18日 03:54:52 +0000 (03:54 +0000)

committer Tom Lane <tgl@sss.pgh.pa.us>

2008年3月18日 03:54:52 +0000 (03:54 +0000)

commit 8e850b9159b1519dcc20982c39cfc3ff16d3d31b

tree 406e8db8c63a4aea6448478923047cc07279cc67 tree

parent a2f1827dfd21a670272d7c7ffe2d4902cfff990e commit | diff

Advance multiple array keys rightmost-first instead of leftmost-first
during a bitmap index scan. This cannot affect the query results
(since we're just dumping the TIDs into a bitmap) but it might offer
some advantage in locality of access to the index. Per Greg Stark.

src/backend/executor/nodeIndexscan.c diff | blob | blame | history

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