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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/14 17:57:10 UTC

[GitHub] [arrow-datafusion] alamb commented on issue #340: StatefulFunctions

alamb commented on issue #340:
URL: https://github.com/apache/arrow-datafusion/issues/340#issuecomment-841408125


   My personal take is that adding some way to mark a `ScalarFunction` as being `immutable`, `stable` or `volatile` would be valuable for query optimization (e.g. we could inline/fold `immutable` functions in logical plans, inline/fold `stable` functions in physical plans, and never inline `volatile` functions)
   
   


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