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Make sure the estimated row count for ephemeral tables is initialized so that

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automatic indices can be used on those tables.

FossilOrigin-Name: d30f7b2deffdba373a2e0988f433c631c790a7b5
This commit is contained in:
drh
2010-10-21 22:58:25 +00:00
parent 06b5db0e39
commit 1ea870125c
4 changed files with 93 additions and 10 deletions
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2
src/select.c
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@@ -1296,6 +1296,7 @@ Table *sqlite3ResultSetOfSelect(Parse *pParse, Select *pSelect){
assert( db->lookaside.bEnabled==0 );
pTab->nRef = 1;
pTab->zName = 0;
pTab->nRowEst = 1000000;
selectColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol);
selectAddColumnTypeAndCollation(pParse, pTab->nCol, pTab->aCol, pSelect);
pTab->iPKey = -1;
@@ -3095,6 +3096,7 @@ static int selectExpander(Walker *pWalker, Select *p){
while( pSel->pPrior ){ pSel = pSel->pPrior; }
selectColumnsFromExprList(pParse, pSel->pEList, &pTab->nCol, &pTab->aCol);
pTab->iPKey = -1;
pTab->nRowEst = 1000000;
pTab->tabFlags |= TF_Ephemeral;
#endif
}else{