Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7468#discussion_r35070334
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1828,6 +1828,46 @@ object functions {
def ascii(columnName: String): Column = ascii(Column(columnName))
/**
+ * Extract a specific(idx) group identified by a java regex, from the
specified string value.
+ *
+ * @group string_funcs
+ * @since 1.5.0
+ */
+ def regexp_extract(e: Column, exp: String, groupIdx: Int): Column = {
+ RegExpExtract(e.expr, lit(exp).expr, lit(groupIdx).expr)
+ }
+
+ /**
+ * Extract a specific(idx) group identified by a java regex, from the
specified string column.
+ *
+ * @group string_funcs
+ * @since 1.5.0
+ */
+ def regexp_extract(columnName: String, exp: String, groupIdx: Int):
Column = {
--- End diff --
remove this one also
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