jonmmease opened a new issue, #7473:
URL: https://github.com/apache/arrow-datafusion/issues/7473
### Describe the bug
DataFusion raises an error when a `List` column is used as the GROUP BY
column
### To Reproduce
```sql
SELECT COUNT(*) FROM (VALUES (['a', 'b'], 1), (['a', 'b'], 2)) as values0
GROUP BY column1;
```
```
External error: Internal error: Unsupported data type in hasher: List(Field
{ name: "item", data_type: Utf8, nullable: true, dict_id: 0, dict_is_ordered:
false, metadata: {} }). This was likely caused by a bug in DataFusion's code
and we would welcome that you file an bug report in our issue tracker
```
### Expected behavior
Successful GROUP BY
### Additional context
Apologies if this is tracked elsewhere, but I didn't find it.
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