PHILO-HE commented on PR #9114:
URL:
https://github.com/apache/incubator-gluten/pull/9114#issuecomment-2749895873
@rui-mo, seems this mapping `{"not_equal", "notequalto"}` is legacy code
that has never been used now.
CH backend engineer is doing some optimization to collapse nested expression
into one, e.g., And((a And b), c) into And(a, b, c). The collapse optimization
can generally bring perf. benefit. But for this legacy involved in this pr, I
think we firstly can remove it.
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