Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/4585#discussion_r24703364
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Column.scala ---
@@ -576,6 +578,27 @@ trait Column extends DataFrame {
override def as(alias: Symbol): Column = exprToColumn(Alias(expr,
alias.name)())
/**
+ * (Scala-specific) Explodes the column to zero or more rows by the
provided function.
+ * {{{
+ * val df = Seq(Tuple1("a b c"), Tuple1("d e")).toDataFrame("words")
+ * val col = df("words")
+ * col.explode("word"){words: String => words.split(" ")}
+ * }}}
+ */
+ def explode[A, B : TypeTag](
+ outputColumn: String)(
--- End diff --
this is equivalant to just explode(f).as(outputColumn) right ? in that
case, i wouldn't use multiline args. just have a single function and let the
user call as on it.
(does that break overloading?)
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