message: Binder: we only need to know the root binder, not the chain of parent binders.
diff: using namespace duckdb;
  using namespace std;
  -Binder::Binder(ClientContext &context, Binder *parent) : context(context), parent(parent), bound_tables(0) {
  +Binder::Binder(ClientContext &context, Binder *parent) :
  + context(context),
  + parent(!parent ? nullptr : (parent->parent ? parent->parent : parent)),
  + bound_tables(0) {
  }
  void Binder::Bind(SQLStatement &statement) {
  switch (statement.type) {
  