Github user huaxingao commented on a diff in the pull request:
https://github.com/apache/spark/pull/21069#discussion_r189978900
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -1882,3 +1882,98 @@ case class ArrayRepeat(left: Expression, right:
Expression)
}
}
+
+/**
+ * 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 {
+
+ override def dataType: DataType = left.dataType
+
+ override def inputTypes: Seq[AbstractDataType] =
+ Seq(ArrayType, left.dataType.asInstanceOf[ArrayType].elementType)
+
+ lazy val elementType: DataType =
left.dataType.asInstanceOf[ArrayType].elementType
+
+ override def nullSafeEval(arr: Any, value: Any): Any = {
+ val elementType = left.dataType.asInstanceOf[ArrayType].elementType
+ val data =
arr.asInstanceOf[ArrayData].toArray[AnyRef](elementType).filter(_ != value)
--- End diff --
@ueshin Fixed. Could you please review again? Thanks a lot!
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