[GitHub] [arrow-datafusion] alamb commented on issue #1192: `-` (negation) with NULL literals does not work: can't be evaluated because the expression's type is Utf8, not signed

[GitBox]

alamb commented on issue #1192:
URL: 
https://github.com/apache/arrow-datafusion/issues/1192#issuecomment-1138375472

   I bet this is a fairly straightforward matter of adding a case in the 
evaluation kernels


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