message: fix expression execution
diff: @@ -47,7 +47,7 @@ unique_ptr<PhysicalOperator> PhysicalPlanGenerator::CreatePlan(LogicalCreateInde
  new_column_types.push_back(LogicalType::ROW_TYPE);
  select_list.push_back(make_unique<BoundReferenceExpression>(LogicalType::ROW_TYPE, op.info->scan_types.size() - 1));
  - auto projection = make_unique<PhysicalProjection>(op.info->scan_types, move(select_list), op.estimated_cardinality);
  + auto projection = make_unique<PhysicalProjection>(new_column_types, move(select_list), op.estimated_cardinality);
  projection->children.push_back(move(table_scan));
  // filter operator for IS_NOT_NULL on each key column
  