adriangb commented on PR #19639:
URL: https://github.com/apache/datafusion/pull/19639#issuecomment-3711967371

   > Did you find any evidence that the selectivity of predicates changes over 
the course of the query (or put another way that reordering them during 
execution would help?)
   
   I imagine that could happen, but the main point is that we start from "we 
know nothing" which we're treating as "nothing is selective" and then once we 
know a filter is selective enough we move it over to be a row filter.


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