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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/11/25 11:56:45 UTC

[GitHub] [arrow-datafusion] isidentical commented on issue #4372: FilterExec should not return Non Statistics when it can not calculate the predicate selectivity

isidentical commented on issue #4372:
URL: https://github.com/apache/arrow-datafusion/issues/4372#issuecomment-1327386404

   Without being able to estimate the selectivity, falling back into accepting that the filter always selects feels like would be worse than simply returning not known (which was the default case even before we worked on the filter selectivity analysis). Is there a particular case where propagating `input_stats` would be useful? 


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