doki23 opened a new issue, #2448:
URL: https://github.com/apache/arrow-datafusion/issues/2448
**Describe the bug**
Result of window function is wrong.
**To Reproduce**
Steps to reproduce the behavior:
Test with code
```
execute_with_partition(
"select c2, SUM(c2) OVER (PARTITION BY c2 ORDER BY c1) as sum_c2
from test limit 5",
4,
)
```
The result vec is
```
"+----+--------+",
"| c2 | sum_c2 |",
"+----+--------+",
"| 1 | 1 |",
"| 1 | 2 |",
"| 1 | 3 |",
"| 1 | 4 |",
"| 2 | 2 |",
"+----+--------+",
```
**Expected behavior**
```
"+----+--------+",
"| c2 | sum_c2 |",
"+----+--------+",
"| 1 | 4 |",
"| 1 | 4 |",
"| 1 | 4 |",
"| 1 | 4 |",
"| .. | .. |",
"+----+--------+",
```
**Additional context**
Add any other context about the problem here.
Problem is about `order by c1`.
It'll be correct if remove the `order by c2`.
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