maropu edited a comment on issue #26458: [SPARK-29821] Allow calling non-aggregate SQL functions with column name URL: https://github.com/apache/spark/pull/26458#issuecomment-552192167 IIRC we don't actively add an interface for string column names in functions. plz use `selectExpr` instead. cc: @HyukjinKwon @srowen
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