kylebarron commented on code in PR #6320:
URL: https://github.com/apache/arrow-rs/pull/6320#discussion_r1735178851
##########
arrow-pyarrow-integration-testing/tests/test_sql.py:
##########
@@ -476,6 +476,35 @@ def test_tensor_array():
del b
+
+def test_empty_recordbatch_with_row_count():
+ """
+ The result of a `count` on a dataset is a RecordBatch with no columns but
with `num_rows` set
+ """
+
+ # If you know how to create an empty RecordBatch with a specific number of
rows, please share
Review Comment:
```py
batch = pa.record_batch({"a": [1, 2, 3, 4]}).select([])
assert len(batch) == 4
assert batch.num_columns == 0
```
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