koenvo commented on code in PR #46057:
URL: https://github.com/apache/arrow/pull/46057#discussion_r2034836989
##########
python/pyarrow/acero.py:
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@@ -374,7 +374,7 @@ def _filter_table(table, expression):
Declaration("filter", options=FilterNodeOptions(expression))
])
result = decl.to_table(use_threads=True)
- if is_batch:
+ if is_batch and result.num_rows > 0:
Review Comment:
Ah I should have updated the docstring. The original implementation (without
my change) returns a RecordBatch when the input is a RecordBatch.
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