Omega359 commented on issue #5398:
URL: 
https://github.com/apache/arrow-datafusion/issues/5398#issuecomment-1892583971

   Thanks for your feedback @alamb! Next question: As best as I can tell it's 
not possible to overload a function to both accept a single string as well as 
accept a list of strings (no varargs).
   
   This means to me at least that the choice is either a break in the dataframe 
api (from `to_timestamp(col("a"))` to `to_timestamp(vec![col("a")])` or a new 
function name. Is an api break acceptable here or is there a way around this?


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