comphead opened a new issue, #9320:
URL: https://github.com/apache/arrow-datafusion/issues/9320
### Describe the bug
```
select lag(a) over () as x1
from
(select 2 id, 'b' a union all select 1 id, null a union all select 3
id, null);
Arrow error: Invalid argument error: Column 'a' is declared as non-nullable
but contains null values
```
### To Reproduce
Above
### Expected behavior
Query should work
### Additional context
We faced this issue not once, latest is
https://github.com/apache/arrow-datafusion/issues/4828
Found when working on https://github.com/apache/arrow-datafusion/pull/9221
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