From: dan <dan@noemail.net>
Date: Mon, 20 Jun 2016 17:25:50 +0000 (+0000)
Subject: For a table on the rhs of a LEFT JOIN operator, do not include terms like "IS NULL... 
X-Git-Tag: version-3.14.0~93
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ee84b0f6906f809771bbf35405a31281a3258d74;p=thirdparty%2Fsqlite.git

For a table on the rhs of a LEFT JOIN operator, do not include terms like "IS NULL" from the WHERE clause in the cursor-hint. These may be false for rows that the cursor would otherwise visit, but true for a row of all NULL values generated by the LEFT JOIN.

FossilOrigin-Name: 913e595615e2ef40fb431f6e7678f6fc8439782e
---

ee84b0f6906f809771bbf35405a31281a3258d74
diff --cc manifest
index b6450cc841,a231acf082..f7bf4fc9ff
--- a/manifest
+++ b/manifest
@@@ -1,5 -1,5 +1,5 @@@
- C Add\sa\smissing\sOP_ColumnsUsed\sopcode\sto\scode\sfor\sexpressions\slike\s"?\sIN\s(SELECT\s...)"\sin\scases\swhere\sexpression\scan\suse\san\sindex\sthat\smay\scontain\sNULL\svalues.
- D 2016-06-16T17:14:02.375
 -C Allow\sLIKE\soperators\sthat\sappear\sin\sa\sWHERE\sclause\sto\sbe\sincluded\sin\sthe\scursor-hint\sfor\sa\scursor\son\sthe\srhs\sof\sa\sLEFT\sJOIN.
 -D 2016-06-20T17:22:06.973
++C For\sa\stable\son\sthe\srhs\sof\sa\sLEFT\sJOIN\soperator,\sdo\snot\sinclude\sterms\slike\s"IS\sNULL"\sfrom\sthe\sWHERE\sclause\sin\sthe\scursor-hint.\sThese\smay\sbe\sfalse\sfor\srows\sthat\sthe\scursor\swould\sotherwise\svisit,\sbut\strue\sfor\sa\srow\sof\sall\sNULL\svalues\sgenerated\sby\sthe\sLEFT\sJOIN.
++D 2016-06-20T17:25:50.750
  F Makefile.in f3f7d2060ce03af4584e711ef3a626ef0b1d6340
  F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
  F Makefile.msc 50149765ef72f4e652b9a0f1f6462c4784bb9423
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  U dan
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diff --cc manifest.uuid
index 6347d15d5f,a65de1e449..53806979d6
--- a/manifest.uuid
+++ b/manifest.uuid
@@@ -1,1 -1,1 +1,1 @@@
- 0b1579caf06a2c42433b8bc9dc28c9ad381aa07c
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