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Ensure that the expression rewriter inside the query flattener decends into

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the substructure of the TK_IF_NULL_ROW operator.  This is a continuation
of the fix for ticket [cad1ab4cb7b0fc344].

FossilOrigin-Name: 28d2902d8f4dfbbfc610f271e00d353b0baae386b56b482f96b88836410be129
This commit is contained in:
drh
2017-05-23 12:44:57 +00:00
parent f352cf57e3
commit 7c1544e051
4 changed files with 17 additions and 10 deletions
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5
src/select.c
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@@ -3213,9 +3213,10 @@ static Expr *substExpr(
pExpr = pNew;
}
}
}else if( pExpr->op==TK_IF_NULL_ROW && pExpr->iTable==pSubst->iTable ){
pExpr->iTable = pSubst->iNewTable;
}else{
if( pExpr->op==TK_IF_NULL_ROW && pExpr->iTable==pSubst->iTable ){
pExpr->iTable = pSubst->iNewTable;
}
pExpr->pLeft = substExpr(pSubst, pExpr->pLeft);
pExpr->pRight = substExpr(pSubst, pExpr->pRight);
if( ExprHasProperty(pExpr, EP_xIsSelect) ){