Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/21037#discussion_r181827177
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -287,3 +287,61 @@ case class ArrayContains(left: Expression, right:
Expression)
override def prettyName: String = "array_contains"
}
+
+/**
+ * A function that returns the position of the first occurrence of element
in the given array
+ * as long. Returns 0 if substr could not be found in str.
+ * Returns null if either of the arguments are null and
+ *
+ * NOTE: that this is not zero based, but 1-based index. The first
character in str has index 1.
+ */
+@ExpressionDescription(
+ usage = """
+ _FUNC_(array, element) - Returns the (1-based) index of the first
element of the array as long.
+ """,
+ examples = """
+ Examples:
+ > SELECT _FUNC_(array(3, 2, 1), 1);
+ 3
+ """,
+ since = "2.4.0")
+case class ArrayPosition(left: Expression, right: Expression)
--- End diff --
According to [these UTs in
Presto](https://github.com/prestodb/presto/blob/master/presto-main/src/test/java/com/facebook/presto/type/TestArrayOperators.java#L651-L656),
you are right.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
