LuciferYang commented on code in PR #38874:
URL: https://github.com/apache/spark/pull/38874#discussion_r1047198481
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala:
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@@ -4600,3 +4600,40 @@ case class ArrayExcept(left: Expression, right:
Expression) extends ArrayBinaryL
override protected def withNewChildrenInternal(
newLeft: Expression, newRight: Expression): ArrayExcept = copy(left =
newLeft, right = newRight)
}
+
+@ExpressionDescription(
+ usage = "_FUNC_(array) - Removes null values from the array.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_(array(1, 2, 3, null));
+ [1,2,3]
+ """,
+ group = "array_funcs",
+ since = "3.4.0")
+case class ArrayCompact(expr: Expression, replacement: Expression)
+ extends RuntimeReplaceable with InheritAnalysisRules {
+
+ def this(expr: Expression) = this(expr,
+ ArrayFilter(expr, ArrayCompact.createLambdaExpr()))
+
+ override def parameters: Seq[Expression] = Seq.empty
+
+ override def prettyName: String = "array_compact"
+
+ override protected def withNewChildInternal(newChild: Expression):
ArrayCompact =
+ copy(replacement = newChild)
+}
+
+object ArrayCompact {
+
+ def apply(expr: Expression): ArrayCompact = {
Review Comment:
+1, Agree with @beliefer
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