Github user cloud-fan commented on the pull request:
https://github.com/apache/spark/pull/11596#issuecomment-194106587
hi @dilipbiswal , thanks for working on this! Some high-level questions:
1. Can any `Generate` operator be converted to a LATERAL VIEW? Does the
plan tree have to match some kind of pattern?
2. Can any `Generate` operator be converted to a "SELECT ...udtf..."
format?
Generally speaking, we should use one unified format for `Generator`'s SQL
string if possible, whatever the original SQL string is.
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