srielau commented on PR #47186:
URL: https://github.com/apache/spark/pull/47186#issuecomment-2216246823

   We are proposing a non-ANSI (`:::`) extension to a non-ANSI expression 
(`try_cast`) mimicking a non-ANSI extension (`::`) to an ANSI expression 
(`cast`). All motivated by ease of use for a non-ANSI type `VARIANT`.
   Seems ANSI isn't really in play here. That ship sailed when we did 
`try_cast`, adopted `::` and added `VARIANT`.
    


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