mingmwang commented on PR #4484:
URL:
https://github.com/apache/arrow-datafusion/pull/4484#issuecomment-1338696365
Test SQL:
````
WITH _sample_data AS (
SELECT 1 as a, 'aa' AS b
UNION ALL
SELECT 3 as a, 'aa' AS b
UNION ALL
SELECT 5 as a, 'bb' AS b
UNION ALL
SELECT 7 as a, 'bb' AS b
), _data2 AS (
SELECT
row_number() OVER (PARTITION BY s.b ORDER BY s.a) AS seq,
s.a,
s.b
FROM _sample_data s
)
SELECT d.b, MAX(d.a) AS max_a
FROM _data2 d
GROUP BY d.b
ORDER BY d.b;
````
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