HyukjinKwon commented on issue #26324: [SPARK-29462] The data type of "array()" should be array<null> URL: https://github.com/apache/spark/pull/26324#issuecomment-549673084 It's a tough call but .. > Since Spark can insert null type to other types, the problem is resolved. This makes sense to me. I personally follow Hive whenever I am not sure but if we have another good coherent reason like ANSI standard, let's try to stick to that.
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