seddonm1 commented on pull request #9038:
URL: https://github.com/apache/arrow/pull/9038#issuecomment-752776874


   > 1. Yes I think there should be a different/more efficient implementation 
that handles the "scalar" case, where the scalar in this case is the list with 
values.
   Agree. I can have a look as part of this PR.
   
   > 2. I believe the current behavior related to NULL is correct, just as 
field=NULL will also be false.
   I have tested in Postgres and it will return `NULL` if value is `NULL` 
unlike this implementation which returns `false`.
   


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