@Override
    public PlanNode visitTableWriter(TableWriterNode node, RewriteContext<Set<Symbol>> context) {
      ImmutableSet.Builder<Symbol> expectedInputs =
          ImmutableSet.<Symbol>builder().addAll(node.getColumns());
      if (node.getSampleWeightSymbol().isPresent()) {
        expectedInputs.add(node.getSampleWeightSymbol().get());
      }
      if (node.getPartitionFunction().isPresent()) {
        PartitionFunctionBinding functionBinding = node.getPartitionFunction().get();
        functionBinding
            .getPartitionFunctionArguments()
            .stream()
            .filter(PartitionFunctionArgumentBinding::isVariable)
            .map(PartitionFunctionArgumentBinding::getColumn)
            .forEach(expectedInputs::add);
        functionBinding.getHashColumn().ifPresent(expectedInputs::add);
      }
      PlanNode source = context.rewrite(node.getSource(), expectedInputs.build());

      return new TableWriterNode(
          node.getId(),
          source,
          node.getTarget(),
          node.getColumns(),
          node.getColumnNames(),
          node.getOutputSymbols(),
          node.getSampleWeightSymbol(),
          node.getPartitionFunction());
    }
 @Override
 public Void visitTableWriter(TableWriterNode node, Void context) {
   List<String> columns = new ArrayList<>();
   for (int i = 0; i < node.getColumnNames().size(); i++) {
     columns.add(node.getColumnNames().get(i) + " := " + node.getColumns().get(i));
   }
   printNode(
       node,
       format("TableWriter[%s]", Joiner.on(", ").join(columns)),
       NODE_COLORS.get(NodeType.TABLE_WRITER));
   return node.getSource().accept(this, context);
 }
    @Override
    public SubPlanBuilder visitTableWriter(TableWriterNode node, Void context) {
      // TODO: create table in pre-execution step, not here
      // Part of the plan should be an Optional<StateChangeListener<QueryState>> and this
      // callback can create the table and abort the table creation if the query fails.
      OutputTableHandle target =
          metadata.beginCreateTable(node.getCatalog(), node.getTableMetadata());

      SubPlanBuilder current = node.getSource().accept(this, context);
      current.setRoot(
          new TableWriterNode(
              node.getId(),
              current.getRoot(),
              target,
              node.getColumns(),
              node.getColumnNames(),
              node.getOutputSymbols(),
              node.getSampleWeightSymbol()));
      return current;
    }