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First attempt at getting block-sort to work. This is an incremental check-in.

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There are many problems still to be worked out.

FossilOrigin-Name: 59742dd4c5259883850044d0938248b009ebd045
This commit is contained in:
drh
2014-03-19 14:10:55 +00:00
parent ddba0c227e
commit 079a307259
12 changed files with 225 additions and 124 deletions
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6
src/where.c
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@@ -5198,9 +5198,11 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){
pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
}
}
if( pWInfo->pOrderBy && pFrom->isOrdered==pWInfo->pOrderBy->nExpr ){
if( pWInfo->pOrderBy ){
if( pWInfo->wctrlFlags & WHERE_DISTINCTBY ){
pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
if( pFrom->isOrdered==pWInfo->pOrderBy->nExpr ){
pWInfo->eDistinct = WHERE_DISTINCT_ORDERED;
}
}else{
pWInfo->nOBSat = pFrom->isOrdered;
pWInfo->revMask = pFrom->revLoop;