HyukjinKwon commented on pull request #29645:
URL: https://github.com/apache/spark/pull/29645#issuecomment-687008542
I personally more prefer an explicit call such as `transform($"struct_col",
_.withField("new_col", col))` more as it's more explicit but I got that this
can be sort of similar with the nested column access in SQL like `a.b`
supports the arrays of structs. No string opinion on this. WDYT @cloud-fan.
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