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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2022/04/13 21:07:02 UTC

[GitHub] [arrow-datafusion] alamb commented on issue #1188: Function calls with NULL literals do not work

alamb commented on issue #1188:
URL: https://github.com/apache/arrow-datafusion/issues/1188#issuecomment-1098487962

   > But for DataType::Utf8 type, it seems arrow-rs does not supported DataType::Null cast to DataType::Utf8 yet,
   
   Aaah -- I remember hitting that (or something similiar) when I started messing around with null constants. We should probably start by fixing the cast kernel in arrow-rs to cast back/forth between null and any type. Is that something you would like to try or shall I try and find some time?
   
   It actually seems as if @bjchambers suggested this last year https://github.com/apache/arrow-rs/issues/684


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