pitrou commented on a change in pull request #11624:
URL: https://github.com/apache/arrow/pull/11624#discussion_r748372603
##########
File path: python/pyarrow/tests/test_table.py
##########
@@ -1746,3 +1746,56 @@ def test_table_select():
result = table.select(['f2'])
expected = pa.table([a2], ['f2'])
assert result.equals(expected)
+
+
+def test_table_group_by():
+ table = pa.table([
+ pa.array([1, 2, 3, 4, 5]),
+ pa.array(["a", "a", "b", "b", "c"]),
+ pa.array([10, 20, 30, 40, 50])
+ ], names=["values", "keys", "bigvalues"])
+
+ r = table.group_by("keys", ["values"], "hash_sum")
+ assert r.to_pydict() == {
+ "key": ["a", "b", "c"],
+ "values_sum": [3, 7, 5]
+ }
Review comment:
I mean the list of key/value pairs. The keys and their associated
aggregate values may not be output in that order.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
