lgbo-ustc commented on issue #8432:
URL:
https://github.com/apache/incubator-gluten/issues/8432#issuecomment-2572172989
```sql
explain select n_regionkey, n_nationkey, count(distinct n_name, n_nationkey)
from tpch_pq.nation group by n_regionkey, n_nationkey;
```
```
CHNativeColumnarToRow
+- ^(6) HashAggregateTransformer(keys=[n_regionkey#2L, n_nationkey#0L],
functions=[count(distinct n_name#1, n_nationkey#0L)], isStreamingAgg=false)
+- ^(6) InputIteratorTransformer[n_regionkey#2L, n_nationkey#0L,
count#28L]
+- ColumnarExchange hashpartitioning(n_regionkey#2L, n_nationkey#0L,
5), ENSURE_REQUIREMENTS, [plan_id=405], [shuffle_writer_type=hash], [OUTPUT]
ArrayBuffer(n_regionkey:LongType, n_nationkey:LongType, count:LongType)
+- ^(5) HashAggregateTransformer(keys=[n_regionkey#2L,
n_nationkey#0L], functions=[partial_count(distinct n_name#1, n_nationkey#0L)],
isStreamingAgg=false)
+- ^(5) HashAggregateTransformer(keys=[n_regionkey#2L,
n_nationkey#0L, n_name#1], functions=[], isStreamingAgg=false)
+- ^(5) InputIteratorTransformer[n_regionkey#2L,
n_nationkey#0L, n_name#1]
+- ColumnarExchange hashpartitioning(n_regionkey#2L,
n_nationkey#0L, n_name#1, n_nationkey#0L, 5), ENSURE_REQUIREMENTS,
[plan_id=399], [shuffle_writer_type=hash], [OUTPUT] List(n_regionkey:LongType,
n_nationkey:LongType, n_name:StringType)
+- ^(4) HashAggregateTransformer(keys=[n_regionkey#2L,
n_nationkey#0L, n_name#1], functions=[], isStreamingAgg=false)
+- ^(4) FileScanTransformer parquet
tpch_pq.nation[n_nationkey#0L,n_name#1,n_regionkey#2L]
```
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