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Overview
| Comment: | Bug fixes in the handling of virtual tables. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | nextgen-query-plan-exp |
| Files: | files | file ages | folders |
| SHA1: |
25c0f7292a20c0db6ef176966d9987f2 |
| User & Date: | drh 2013-06-12 17:55:50 |
Context
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2013-06-12
| ||
| 20:18 | Activate the one-pass optimization. Update comments, especially the descriptions of the various objects. (check-in: e120c558 user: drh tags: nextgen-query-plan-exp) | |
| 17:55 | Bug fixes in the handling of virtual tables. (check-in: 25c0f729 user: drh tags: nextgen-query-plan-exp) | |
| 17:17 | Merge all changes from trunk. (check-in: f2e15b19 user: drh tags: nextgen-query-plan-exp) | |
Changes
Changes to src/where.c.
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sqlite3ExprCachePush(pParse);
iReg = sqlite3GetTempRange(pParse, nConstraint+2);
addrNotFound = pLevel->addrBrk;
for(j=0; j<nConstraint; j++){
int iTarget = iReg+j+2;
pTerm = pLoop->aLTerm[j];
if( pTerm->eOperator & WO_IN ){
codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, iTarget);
addrNotFound = pLevel->addrNxt;
}else{
sqlite3ExprCode(pParse, pTerm->pExpr->pRight, iTarget);
}
}
................................................................................
whereLoopInit(&sBest);
pItem = pWInfo->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 ){
sSubBuild.pWC = &pOrTerm->u.pAndInfo->wc;
}else if( pOrTerm->leftCursor==iCur ){
tempWC.pWInfo = pWC->pWInfo;
tempWC.pOuter = pWC;
tempWC.op = TK_AND;
tempWC.nTerm = 1;
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sqlite3ExprCachePush(pParse);
iReg = sqlite3GetTempRange(pParse, nConstraint+2);
addrNotFound = pLevel->addrBrk;
for(j=0; j<nConstraint; j++){
int iTarget = iReg+j+2;
pTerm = pLoop->aLTerm[j];
if( pTerm==0 ) continue;
if( pTerm->eOperator & WO_IN ){
codeEqualityTerm(pParse, pTerm, pLevel, j, bRev, iTarget);
addrNotFound = pLevel->addrNxt;
}else{
sqlite3ExprCode(pParse, pTerm->pExpr->pRight, iTarget);
}
}
................................................................................
whereLoopInit(&sBest);
pItem = pWInfo->pTabList->a + pNew->iTab;
iCur = pItem->iCursor;
sSubBuild = *pBuilder;
sSubBuild.pOrderBy = 0;
sSubBuild.pBest = &sBest;
for(pOrTerm=pOrWC->a; rc==SQLITE_OK && pOrTerm<pOrWCEnd; pOrTerm++){
if( (pOrTerm->eOperator & WO_AND)!=0 ){
sSubBuild.pWC = &pOrTerm->u.pAndInfo->wc;
}else if( pOrTerm->leftCursor==iCur ){
tempWC.pWInfo = pWC->pWInfo;
tempWC.pOuter = pWC;
tempWC.op = TK_AND;
tempWC.nTerm = 1;
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