zhengruifeng commented on PR #47283:
URL: https://github.com/apache/spark/pull/47283#issuecomment-2226736753
> > is it possible to extract this field first by `df.select('a.b.c')` ?
>
> I don't like this way, in this way we have to catch exception raised by
`df.select('a.b.c')` and match error message , it leads to fragile code.
I still hesitate about this approach, since there maybe some related
configurations, e.g. case sensitive or not
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