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Do not allow constant propagation between WHERE-clause terms and ON-clause terms

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as this can confuse RIGHT JOIN.  Fix for the problem reported by
[forum:/forumpost/8e4c352937e82929|forum post 8e4c352937e82929].

FossilOrigin-Name: cab9b4cccd13bf0ab2bc38dc9a9c04ddd34e29c65ab6aef07b6bb3c31a43bece
This commit is contained in:
drh
2022-06-10 11:28:52 +00:00
parent a27e350b6f
commit 958fcd417c
4 changed files with 32 additions and 9 deletions
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6
src/select.c
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@@ -4722,7 +4722,11 @@ static void constInsert(
static void findConstInWhere(WhereConst *pConst, Expr *pExpr){
Expr *pRight, *pLeft;
if( NEVER(pExpr==0) ) return;
if( ExprHasProperty(pExpr, EP_OuterON) ) return;
if( ExprHasProperty(pExpr, EP_OuterON|EP_InnerON) ){
testcase( ExprHasProperty(pExpr, EP_OuterON) );
testcase( ExprHasProperty(pExpr, EP_InnerON) );
return;
}
if( pExpr->op==TK_AND ){
findConstInWhere(pConst, pExpr->pRight);
findConstInWhere(pConst, pExpr->pLeft);