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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/12 11:21:47 UTC

[GitHub] [arrow-datafusion] returnString commented on pull request #288: [Datafusion] NOW() function support

returnString commented on pull request #288:
URL: https://github.com/apache/arrow-datafusion/pull/288#issuecomment-839692218


   > I am not sure we should do this: we are changing all functions' signatures because of a single function's requirement.
   > 
   > I think we should add a node specifically for `NOW` and leave all the other functions' alone.
   
   We'll probably hit up against similar issues for current_date, current_time, current_timestamp, etc, in case that helps formulate what said node would look like.
   
   Interestingly, this is an instance where it would be much _easier_ if slightly less performant to implement as a UDF for certain use cases, because you could just close over some external state when building your execution ctx.


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