judahrand commented on code in PR #34234:
URL: https://github.com/apache/arrow/pull/34234#discussion_r1125754138
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python/pyarrow/tests/test_table.py:
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@@ -2297,6 +2297,49 @@ def test_table_join_many_columns():
})
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+def test_table_join_asof():
+ t1 = pa.Table.from_pydict({
+ "colA": [1, 1, 5, 6, 7],
+ "col2": ["a", "b", "a", "b", "f"]
+ })
+
+ t2 = pa.Table.from_pydict({
+ "colB": [2, 9, 15],
+ "col3": ["a", "b", "g"],
+ "colC": [1., 3., 5.]
+ })
+
+ r = t1.join_asof(t2, "colA", "col2", 1, "colB", "col3")
Review Comment:
> A test where the left/right column names are the same, so you can rely on
not having to specify right_on/by
This is now tested.
> A test where the by keys is a list of columns instead of a single one
This is now tested.
> and what happens if passing an empty list?
It seems like it just doesn't perform the join over any partitions - this is
also now tested.
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