Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/21069#discussion_r181525550 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala --- @@ -287,3 +287,44 @@ case class ArrayContains(left: Expression, right: Expression) override def prettyName: String = "array_contains" } + +/** + * Remove all elements that equal to element from the given array + */ +@ExpressionDescription( + usage = "_FUNC_(array, element) - Remove all elements that equal to element from array.", + examples = """ + Examples: + > SELECT _FUNC_(array(1, 2, 3, null, 3), 3); + [1,2,null] + """, since = "2.4.0") +case class ArrayRemove(left: Expression, right: Expression) + extends BinaryExpression with ImplicitCastInputTypes with CodegenFallback { --- End diff -- As the same reason at https://github.com/apache/spark/pull/21061#discussion_r181399858, I think we should avoid using `CodegenFallback` if possible.
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