Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/21318#discussion_r187843283
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -39,7 +39,21 @@ import org.apache.spark.util.Utils
/**
- * Functions available for DataFrame operations.
+ * Commonly used functions available for DataFrame operations. Using
functions defined here provides
--- End diff --
Maybe I am too much caring about this but I hope we don't have arguments
too much if it's common or not ...
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