rtpsw commented on code in PR #34311:
URL: https://github.com/apache/arrow/pull/34311#discussion_r1116964868
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cpp/src/arrow/compute/exec/aggregate_node.cc:
##########
@@ -440,15 +623,33 @@ class GroupByNode : public ExecNode, public TracedNode {
int key_field_id = key_field_ids[i];
output_fields[base + i] = input_schema->field(key_field_id);
}
+ base += keys.size();
+ for (size_t i = 0; i < segment_keys.size(); ++i) {
+ int segment_key_field_id = segment_key_field_ids[i];
+ output_fields[base + i] = input_schema->field(segment_key_field_id);
Review Comment:
Yes, but [as noted
above](https://github.com/apache/arrow/pull/34311#discussion_r1116877818), I
think this usage should be disallowed.
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