WinkerDu commented on issue #1188:
URL:
https://github.com/apache/arrow-datafusion/issues/1188#issuecomment-1098461801
@alamb
I try to introduce `ScalarValue::Null`, which `pub fn get_datatype(&self) ->
DataType {..}` method will return `DataType::Null`.
But for `DataType::Utf8` type, it seems arrow-rs does not supported
`DataType::Null` cast to `DataType::Utf8` yet,
So I got panic error in some cases like `Select ascii(NULL)`.
Or I just allow `Utf8` coercion check pass for function `NULL` support?
What do you think about it ?
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