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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/19 22:51:31 UTC

[GitHub] [arrow] westonpace commented on pull request #12891: ARROW-12659: [C++] Support is_valid as a guarantee

westonpace commented on PR #12891:
URL: https://github.com/apache/arrow/pull/12891#issuecomment-1103239308

   > Hmm. I guess we are treating guarantees and filters differently. x < 10 as a guarantee implies is_valid(x), but not as a filter. We may want to fix that, but that would also be a drastic change.
   
   Sorry, I wasn't clear.  I don't think we should automatically add `is_valid(x)`.  I'm just wondering if this is something we ought to document since it may not be intuitive to users.  I can probably add something when we talk about pushdown filtering in the datasets docs.


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