Github user mateiz commented on the pull request:
https://github.com/apache/spark/pull/1759#issuecomment-51730914
@marmbrus how do you intend this to work with things like Hive or JDBC? We
won't know the types at compile time there, but we might still want a solution
that checks the field names. I think we should have a design for that in mind
or else this will be of somewhat limited use.
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