karenfeng commented on pull request #33995:
URL: https://github.com/apache/spark/pull/33995#issuecomment-928263469
For clarification @AngersZhuuuu: the PR description says:
> For query
> ```
> select array_intersect(array(cast('nan' as double), 1d), array(cast('nan'
as double)))
> ```
> This returns [NaN], but it should return [].
Is this the right way around? It seems like we now correctly return `[NaN]`,
but previously incorrectly returned `[]`.
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