Github user cloud-fan commented on the issue: https://github.com/apache/spark/pull/19813 Do we have to sacrifice one of them? If we do then I agree deeply nested expression is more common than a long chain of arithmetic expressions and we should get this patch. I think we should explore more about how to split methods in whole stage codegen before making this decision, at least now I'm not convinced that we have to forbid expressions to output statement.
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