Method DebugString

be/src/exec/grouping-aggregator.cc:628–632

}

string GroupingAggregator::DebugString(int indentation_level) const {
  stringstream ss;
  DebugString(indentation_level, &ss);
  return ss.str();
}

void GroupingAggregator::DebugString(int indentation_level, stringstream* out) const {
  *out << string(indentation_level * 2, ' ');