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Corrections to comments on the whereScanInit() interface.

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FossilOrigin-Name: ab7ab415d19524f6c3901e474d3a154f55d28530
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drh
2016-05-06 18:47:23 +00:00
parent 87f8f1ac69
commit a3fd75d426
3 changed files with 16 additions and 13 deletions
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@@ -1,5 +1,5 @@
C For\sDELETE\soperations,\smake\ssure\sthat\sseeks\son\sthe\smain\stable\sare\snot\ndeferred,\ssince\sif\sthey\sare\sand\snone\sof\sthe\sindexes\sreference\scolumns\sof\nthe\stable,\sthe\sseek\smight\snever\soccur\suntil\sthe\sOP_Delete\sopcode,\swhich\sis\ntoo\slate.\s\sFix\sfor\sticket\s[16c9801ceba49].
D 2016-05-06T16:49:54.299
C Corrections\sto\scomments\son\sthe\swhereScanInit()\sinterface.
D 2016-05-06T18:47:23.830
F Makefile.in 9eda6e1c90d05c199c3ec8a7069b0682ad307657
F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
F Makefile.msc db82b35aef27f412fef14d8534afc022138bcdfd
@@ -457,7 +457,7 @@ F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
F src/wal.c 4db22ed7e77bcf672b1a685d6ddeffba8d5be302
F src/wal.h 2f7c831cf3b071fa548bf2d5cac640846a7ff19c
F src/walker.c 0f142b5bd3ed2041fc52d773880748b212e63354
F src/where.c 019e5b10dedcf54ef077ce23dd8fce38d614dcf4
F src/where.c fd321cc2c5ee346a2e146b93892ed01bb7a839c0
F src/whereInt.h 3b1fc240e322613ba4e9dc857ca9c7c3390acc74
F src/wherecode.c 6e2da2449d5589b2ce988afae125a61cad665c86
F src/whereexpr.c eacc0e60d029a082b4fc0cc42ea98544add1319e
@@ -1487,8 +1487,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
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P 93a2bace5704f7ecad56541a6b3e06a88f7f393f
R 3ca4ebdcc8bebe388d97851d25aa812d
U drh
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@@ -1 +1 @@
93a2bace5704f7ecad56541a6b3e06a88f7f393f
ab7ab415d19524f6c3901e474d3a154f55d28530

14
src/where.c
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@@ -261,7 +261,10 @@ static WhereTerm *whereScanNext(WhereScan *pScan){
**
** The scanner will be searching the WHERE clause pWC. It will look
** for terms of the form "X <op> <expr>" where X is column iColumn of table
** iCur. The <op> must be one of the operators described by opMask.
** iCur. Or if pIdx!=0 then X is column iColumn of index pIdx. pIdx
** must be one of the indexes of table iCur.
**
** The <op> must be one of the operators described by opMask.
**
** If the search is for X and the WHERE clause contains terms of the
** form X=Y then this routine might also return terms of the form
@@ -309,11 +312,12 @@ static WhereTerm *whereScanInit(
/*
** Search for a term in the WHERE clause that is of the form "X <op> <expr>"
** where X is a reference to the iColumn of table iCur and <op> is one of
** the WO_xx operator codes specified by the op parameter.
** Return a pointer to the term. Return 0 if not found.
** where X is a reference to the iColumn of table iCur or of index pIdx
** if pIdx!=0 and <op> is one of the WO_xx operator codes specified by
** the op parameter. Return a pointer to the term. Return 0 if not found.
**
** If pIdx!=0 then search for terms matching the iColumn-th column of pIdx
** If pIdx!=0 then it must be one of the indexes of table iCur.
** Search for terms matching the iColumn-th column of pIdx
** rather than the iColumn-th column of table iCur.
**
** The term returned might by Y=<expr> if there is another constraint in