jayzhan211 commented on issue #9637:
URL: 
https://github.com/apache/arrow-datafusion/issues/9637#issuecomment-2002435177

   I think it is possible to preserve unnecessary clones even if we preserve 
the old plan, and only clone the data for the new expr and new plan, but I 
agree it is a little complicated, it needs the enum I show above. We can 
optimize for the default path first, and others later on.


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