From: drh <drh@noemail.net>
Date: Thu, 25 Feb 2016 18:40:18 +0000 (+0000)
Subject: Query planner improvements:  Take the LIMIT into account when estimated the
X-Git-Tag: version-3.12.0~147
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=eecb80e77e3556e9373237eff6ab0a8dad7eb5fb;p=thirdparty%2Fsqlite.git

Query planner improvements:  Take the LIMIT into account when estimated the
cost of an ORDER BY.  Avoid automatic indexes on query loops that are expected
to run less than twice.

FossilOrigin-Name: bf46179d4484376909dce40ffcc06fecb19b3544
---

eecb80e77e3556e9373237eff6ab0a8dad7eb5fb
diff --cc manifest
index ed34efd918,cb1fddd357..cd7f610e12
--- a/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C In\sthe\scommand-line\sshell:\s\sWhen\sthe\s".import"\scommand\sis\screating\sa\snew\ntable\susing\scolumn\snames\sfrom\sthe\sfirst\srow\sof\sCSV\sinput,\smake\ssure\s\ndouble-quotes\sin\sthe\sname\sare\sproperly\sescaped.
- D 2016-02-25T13:33:02.701
 -C Improvement\son\sthe\sprevious\scheck-in:\s\sdisallow\sautomatic\sindexes\sfor\sany\nloop\sthat\sis\sexpected\sto\srun\sless\sthan\stwice.
 -D 2016-02-25T18:22:09.962
++C Query\splanner\simprovements:\s\sTake\sthe\sLIMIT\sinto\saccount\swhen\sestimated\sthe\ncost\sof\san\sORDER\sBY.\s\sAvoid\sautomatic\sindexes\son\squery\sloops\sthat\sare\sexpected\nto\srun\sless\sthan\stwice.
++D 2016-02-25T18:40:18.408
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@@@ -1429,7 -1429,7 +1429,8 @@@ F tool/vdbe_profile.tcl 246d0da094856d7
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  F tool/warnings.sh a98af506df552f3b3c0d904f94e4cdc4e1a6d598
  F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
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+ R 8a8e5a80c02a4dfa694df7d4a40dc042
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  U drh
- Z 8dad8d5c86c3c0b275d53a26a0713023
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diff --cc manifest.uuid
index 6f30a6f925,27e8814012..6a068ab962
--- a/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 2e67a1c823c7003e7d2619c7d8b6db6ce046c527
 -aab53a21894ba51d325fd8f8f4bb4163ece74391
++bf46179d4484376909dce40ffcc06fecb19b3544