AlenkaF commented on code in PR #46057:
URL: https://github.com/apache/arrow/pull/46057#discussion_r2034844303
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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:
Yeah, it is a bit confusing. Looking at the `Table.filter` method:
https://github.com/apache/arrow/blob/a5b2574208587464008127bbc85619562e6e85dd/python/pyarrow/table.pxi#L2199-L2219
and the `is_batch` variable defined in `_filter_table` I would think the
type should stay the same.
Will look into the C++ docs.
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