Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21069#discussion_r182605869
--- 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 --
I'm not sure about it. But I think it is better to make it implement
codegen instead of CodegenFallback.
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