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The early-out of the inner loop on the min/max optimization was overly

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aggressive for the cases where there is a join and outer loops contain
IN operators.  Fix this.  Test case in TH3.

FossilOrigin-Name: ccd3bae14b6b47bb0f9622700c04db989f76ce65e10e0709964cfd0675eca762
This commit is contained in:
drh
2021-01-14 00:53:14 +00:00
parent 5e5683ae46
commit 5870dc80f9
3 changed files with 15 additions and 12 deletions
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13
src/where.c
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@@ -112,14 +112,17 @@ int sqlite3WhereOrderByLimitOptLabel(WhereInfo *pWInfo){
*/
void sqlite3WhereMinMaxOptEarlyOut(Vdbe *v, WhereInfo *pWInfo){
WhereLevel *pInner;
int i;
if( !pWInfo->bOrderedInnerLoop ) return;
if( pWInfo->nOBSat==0 ) return;
pInner = &pWInfo->a[pWInfo->nLevel-1];
if( (pInner->pWLoop->wsFlags & WHERE_COLUMN_IN)==0 ){
sqlite3VdbeGoto(v, pWInfo->iBreak);
}else if( pInner->addrNxt!=pWInfo->iContinue ){
sqlite3VdbeGoto(v, pInner->addrNxt);
for(i=pWInfo->nLevel-1; i>=0; i--){
pInner = &pWInfo->a[i];
if( (pInner->pWLoop->wsFlags & WHERE_COLUMN_IN)!=0 ){
sqlite3VdbeGoto(v, pInner->addrNxt);
return;
}
}
sqlite3VdbeGoto(v, pWInfo->iBreak);
}
/*