beliefer commented on a change in pull request #27507: [SPARK-24884][SQL]
Support regexp function regexp_extract_all
URL: https://github.com/apache/spark/pull/27507#discussion_r378009621
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/regexpExpressions.scala
##########
@@ -537,3 +557,71 @@ case class RegExpExtract(subject: Expression, regexp:
Expression, idx: Expressio
})
}
}
+
+/**
+ * Extract all specific(idx) group identified by a Java regex.
+ *
+ * NOTE: this expression is not THREAD-SAFE, as it has some internal mutable
status.
+ */
+@ExpressionDescription(
+ usage = "_FUNC_(str, regexp[, idx]) - Extracts all group that matches
`regexp`.",
Review comment:
OK.
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