message: Issue Selection vector nullptr
  Use FlatVector::INCREMENTAL_SELECTION_VECTOR.
diff: @@ -207,8 +207,8 @@ void VectorOperations::Copy(const Vector &source, Vector &target, idx_t source_c
  target_offset);
  break;
  case VectorType::FLAT_VECTOR: {
  - SelectionVector selection_vector;
  - VectorOperations::Copy(source, target, selection_vector, source_count, source_offset, target_offset);
  + VectorOperations::Copy(source, target, FlatVector::INCREMENTAL_SELECTION_VECTOR, source_count, source_offset,
  + target_offset);
  break;
  }
  case VectorType::SEQUENCE_VECTOR: {
  