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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/17 08:28:57 UTC

[GitHub] [arrow-datafusion] liukun4515 commented on issue #1192: `-` (negation) with NULL literals does not work: can't be evaluated because the expression's type is Utf8, not signed

liukun4515 commented on issue #1192:
URL: https://github.com/apache/arrow-datafusion/issues/1192#issuecomment-1100830964

   
   
   
   > @alamb @xudong963 Maybe we can introduce this syntax, and keep the contract that operators comes out result `NULL` when accepts `NULL`.
   
   I think It's better to make it consistent with PG in SQL dialect.


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