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Performance improvement for the OR-clause analysis in the NGQP. 

FossilOrigin-Name: 9b1c4954e468d0acfb5787e6bff56d50a3e7bc1a
This commit is contained in:
drh 2013-06-05 17:53:43 +00:00
parent e9d935a8aa
commit 783dece5d6
3 changed files with 21 additions and 21 deletions
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12
manifest
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@ -1,5 +1,5 @@
C Minor\sperformance\stuning\sof\sthe\sNGQP.
D 2013-06-05T16:19:59.536
C Performance\simprovement\sfor\sthe\sOR-clause\sanalysis\sin\sthe\sNGQP.
D 2013-06-05T17:53:43.355
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in 5e41da95d92656a5004b03d3576e8b226858a28e
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@ -289,7 +289,7 @@ F src/vtab.c b05e5f1f4902461ba9f5fc49bb7eb7c3a0741a83
F src/wal.c 436bfceb141b9423c45119e68e444358ee0ed35d
F src/wal.h df01efe09c5cb8c8e391ff1715cca294f89668a4
F src/walker.c 4fa43583d0a84b48f93b1e88f11adf2065be4e73
F src/where.c 7d8a020b2d60ff2b536e6325af18ed11c24f81e5
F src/where.c 35e510bf0de4925316934e0ae989db9d062069d5
F test/8_3_names.test ebbb5cd36741350040fd28b432ceadf495be25b2
F test/aggerror.test a867e273ef9e3d7919f03ef4f0e8c0d2767944f2
F test/aggnested.test 45c0201e28045ad38a530b5a144b73cd4aa2cfd6
@ -1094,7 +1094,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
P 1c4a78807b7a28c9976ca8c5722ff4e2e8755b7e
R 4c15e208b04c5a33c6528133849a04db
P cbef38c2d123e7d5a02c2a2450e8b329e3e96ee9
R 0e9737367b7d6db3cdf59c7691a34aed
U drh
Z c639596f7b6bcfbd4cf032fe7e7c5fd1
Z 4606f36521508d3eb4fac531dd74f101

2
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@ -1 +1 @@
cbef38c2d123e7d5a02c2a2450e8b329e3e96ee9
9b1c4954e468d0acfb5787e6bff56d50a3e7bc1a

28
src/where.c
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@ -4430,17 +4430,6 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){
if( pWC->wctrlFlags & WHERE_AND_ONLY ) return SQLITE_OK;
pWCEnd = pWC->a + pWC->nTerm;
pNew = pBuilder->pNew;
pItem = pBuilder->pTabList->a + pNew->iTab;
iCur = pItem->iCursor;
sSubBuild = *pBuilder;
sSubBuild.pOrderBy = 0;
sSubBuild.pBest = &sBest;
tempWC.pParse = pWC->pParse;
tempWC.pMaskSet = pWC->pMaskSet;
tempWC.pOuter = pWC;
tempWC.op = TK_AND;
tempWC.wctrlFlags = 0;
tempWC.nTerm = 1;
for(pTerm=pWC->a; pTerm<pWCEnd && rc==SQLITE_OK; pTerm++){
if( (pTerm->eOperator & WO_OR)!=0
@ -4452,12 +4441,23 @@ static int whereLoopAddOr(WhereLoopBuilder *pBuilder, Bitmask mExtra){
double rTotal = 0;
double nRow = 0;
Bitmask prereq = mExtra;
pItem = pBuilder->pTabList->a + pNew->iTab;
iCur = pItem->iCursor;
sSubBuild = *pBuilder;
sSubBuild.pOrderBy = 0;
sSubBuild.pBest = &sBest;
for(pOrTerm=pOrWC->a; pOrTerm<pOrWCEnd; pOrTerm++){
if( (pOrTerm->eOperator& WO_AND)!=0 ){
if( (pOrTerm->eOperator & WO_AND)!=0 ){
sSubBuild.pWC = &pOrTerm->u.pAndInfo->wc;
}else if( pOrTerm->leftCursor==iCur ){
tempWC.pParse = pWC->pParse;
tempWC.pMaskSet = pWC->pMaskSet;
tempWC.pOuter = pWC;
tempWC.op = TK_AND;
tempWC.wctrlFlags = 0;
tempWC.nTerm = 1;
tempWC.a = pOrTerm;
sSubBuild.pWC = &tempWC;
}else{
@ -4787,7 +4787,7 @@ static const char *wherePathName(WherePath *pPath, int nLoop, WhereLoop *pLast){
** error occurs.
*/
static int wherePathSolver(WhereInfo *pWInfo, double nRowEst){
int mxChoice = 10; /* Maximum number of simultaneous paths tracked */
int mxChoice; /* Maximum number of simultaneous paths tracked */
int nLoop; /* Number of terms in the join */
sqlite3 *db; /* The database connection */
int iLoop; /* Loop counter over the terms of the join */