asmello commented on issue #23879: [SPARK-26979][SQL] Add missing column name 
support for SQL functions
URL: https://github.com/apache/spark/pull/23879#issuecomment-466762538
 
 
   > If Spark's going to remove string arguments, it should also be considered 
to remove string as columns in PySpark APIs as well.
   
   I get the reasoning, but like I said, in Python it aligns better with the 
language to keep the overloads. It's already 99.9% the way to fully consistent, 
too - it would take a huge refactor to do the subtractive change, but it only 
takes a few more lines for the additive one. I have no voice over this 
decision, but I'd be deeply disappointed if PySpark lost the API sugar.

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