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Add a bit to the SQLITE_TESTCTRL_OPTIMIZATIONS option for sqlite3_file_control()

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that will disable the use of SQLITE_STAT3 information in the query planner.

FossilOrigin-Name: 60c19b86797fb8a37f175545929883ebeff7f307
This commit is contained in:
drh
2013-06-28 17:29:25 +00:00
parent 9d5a579c35
commit 40aa936f7f
5 changed files with 15 additions and 11 deletions
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6
src/where.c
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@@ -1738,6 +1738,7 @@ static void exprAnalyze(
if( pExpr->op==TK_NOTNULL
&& pExpr->pLeft->op==TK_COLUMN
&& pExpr->pLeft->iColumn>=0
&& OptimizationEnabled(db, SQLITE_Stat3)
){
Expr *pNewExpr;
Expr *pLeft = pExpr->pLeft;
@@ -2571,7 +2572,7 @@ static int whereRangeScanEst(
#ifdef SQLITE_ENABLE_STAT3
if( nEq==0 && p->nSample ){
if( nEq==0 && p->nSample && OptimizationEnabled(pParse->db, SQLITE_Stat3) ){
sqlite3_value *pRangeVal;
tRowcnt iLower = 0;
tRowcnt iUpper = p->aiRowEst[0];
@@ -4336,7 +4337,8 @@ static int whereLoopAddBtreeIndex(
pNew->nOut = saved_nOut>rDiv+10 ? saved_nOut - rDiv : 10;
}
#ifdef SQLITE_ENABLE_STAT3
if( pNew->u.btree.nEq==1 && pProbe->nSample ){
if( pNew->u.btree.nEq==1 && pProbe->nSample
&& OptimizationEnabled(db, SQLITE_Stat3) ){
tRowcnt nOut = 0;
if( (pTerm->eOperator & (WO_EQ|WO_ISNULL))!=0 ){
testcase( pTerm->eOperator & WO_EQ );