message: trying to debug union pipeline scheduling
diff: @@ -175,6 +175,7 @@ template class std::vector<int>;
  INSTANTIATE_VECTOR(std::vector<std::unique_ptr<Rule>>)
  INSTANTIATE_VECTOR(std::vector<std::unique_ptr<Pipeline>>)
  INSTANTIATE_VECTOR(std::vector<std::shared_ptr<Pipeline>>)
  +INSTANTIATE_VECTOR(std::vector<std::weak_ptr<Pipeline>>)
  template class std::vector<std::vector<Expression *>>;
  template class std::vector<LogicalType>;
  INSTANTIATE_VECTOR(std::vector<std::unique_ptr<JoinHashTable>>)
  