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projects / thirdparty / sqlite.git / commit

author	drh <drh@noemail.net>
	Tue, 21 Oct 2014 01:05:09 +0000 (01:05 +0000)
committer	drh <drh@noemail.net>
	Tue, 21 Oct 2014 01:05:09 +0000 (01:05 +0000)
commit	c8bbce1e6a373fa7b74165aeddfc5be999cff8d9
tree	764591148d33aac23471771f3b4c448ddff2a9f9	tree \| snapshot
parent	40253262e0b3f9bfd79b6a57c891eb0f0459a38f	commit \| diff

If a skip-scan is a proper subset of some other scan, then adjust the
cost of the skip-scan upward so that it is more costly than the other scan.
Such a cost imbalance can arise under STAT4 because of difficulties in getting
an accurate estimate for skip-scans.

FossilOrigin-Name: f4b22a2620a5dc48949048c2ecbd226755d4b2c3

manifest		diff \| blob \| blame \| history
manifest.uuid		diff \| blob \| blame \| history
src/where.c		diff \| blob \| blame \| history
src/whereInt.h		diff \| blob \| blame \| history
test/skipscan6.test	[new file with mode: 0644]	blob

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