Github user mn-mikke commented on a diff in the pull request: https://github.com/apache/spark/pull/21028#discussion_r185577745 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala --- @@ -378,6 +405,125 @@ case class ArrayContains(left: Expression, right: Expression) override def prettyName: String = "array_contains" } +/** + * Checks if the two arrays contain at least one common element. + */ +// scalastyle:off line.size.limit +@ExpressionDescription( + usage = "_FUNC_(a1, a2) - Returns true if a1 contains at least an element present also in a2. If the arrays have no common element and either of them contains a null element null is returned, false otherwise.", + examples = """ + Examples: + > SELECT _FUNC_(array(1, 2, 3), array(3, 4, 5)); + true + """, since = "2.4.0") +// scalastyle:off line.size.limit +case class ArraysOverlap(left: Expression, right: Expression) --- End diff -- Shouldn't you override `prettyName` to a value following the conventions? ``` override def prettyName: String = "arrays_overlap" ```
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