Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/22045#discussion_r210469510
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
---
@@ -497,6 +497,53 @@ case class ArrayAggregate(
override def prettyName: String = "aggregate"
}
+/**
+ * Returns a map that applies the function to each value of the map.
+ */
+@ExpressionDescription(
+usage = "_FUNC_(expr, func) - Transforms values in the map using the
function.",
+examples = """
+ Examples:
+ > SELECT _FUNC_(map(array(1, 2, 3), array(1, 2, 3)), (k, v) -> v +
1);
+ map(array(1, 2, 3), array(2, 3, 4))
+ > SELECT _FUNC_(map(array(1, 2, 3), array(1, 2, 3)), (k, v) -> k +
v);
+ map(array(1, 2, 3), array(2, 4, 6))
+ """,
+since = "2.4.0")
--- End diff --
ditto.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
