Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/22227#discussion_r215124064
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -2546,15 +2546,39 @@ object functions {
def soundex(e: Column): Column = withExpr { SoundEx(e.expr) }
/**
- * Splits str around pattern (pattern is a regular expression).
+ * Splits str around matches of the given regex.
*
- * @note Pattern is a string representation of the regular expression.
+ * @param str a string expression to split
+ * @param regex a string representing a regular expression. The regex
string should be
+ * a Java regular expression.
*
* @group string_funcs
* @since 1.5.0
*/
- def split(str: Column, pattern: String): Column = withExpr {
- StringSplit(str.expr, lit(pattern).expr)
+ def split(str: Column, regex: String): Column = withExpr {
--- End diff --
Yea, I don't think we should change the name in case either makes sense in
a way.
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