Github user chenghao-intel commented on the pull request:
https://github.com/apache/spark/pull/6169#issuecomment-102250162
I've tested the following sql in Hive
```
SELECT sum(key) OVER (partition by value) FROM src ORDER BY value;
```
It also failed in semantic analysis, I am not sure why you think we should
support this? As the `order by` expression is not part of the aggregate
expressions.
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