message: No selection vector allowed in DataTable::Append (for now)
diff: @@ -28,6 +28,8 @@ void PhysicalInsert::GetChunkInternal(ClientContext &context, DataChunk &chunk,
  }
  auto &chunk = state->child_chunk;
  + state->child_chunk.Flatten();
  +
  ExpressionExecutor executor(chunk);
  insert_chunk.Reset();
  if (column_index_map.size() > 0) {
  