Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/21028#discussion_r186355622
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -3039,6 +3039,16 @@ object functions {
ArrayContains(column.expr, Literal(value))
}
+ /**
+ * Returns `true` if `a1` and `a2` have at least one non-null element in
common. If not and
+ * any of the arrays contains a `null`, it returns `null`. It returns
`false` otherwise.
+ * @group collection_funcs
+ * @since 2.4.0
+ */
+ def arrays_overlap(a1: Column, a2: Column): Column = withExpr {
+ ArraysOverlap(a1.expr, a2.expr)
+ }
--- End diff --
nit: indent
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