Github user HyukjinKwon commented on the issue:
https://github.com/apache/spark/pull/21626
FWIW, I believe schema inference feature should be added (see
http://apache-spark-developers-list.1001551.n3.nabble.com/Spark-SQL-JSON-Column-Support-td19132.html#a19154
too when from_json was first added) and I imagined that's relatively
complicated. This way was one way I was thinking, actually. If there's an
easier way, that would be great.
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