ilicmarkodb commented on code in PR #47521:
URL: https://github.com/apache/spark/pull/47521#discussion_r1720742864
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/types/PhysicalDataType.scala:
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@@ -234,10 +234,72 @@ case object PhysicalLongType extends PhysicalLongType
case class PhysicalMapType(keyType: DataType, valueType: DataType,
valueContainsNull: Boolean)
extends PhysicalDataType {
- override private[sql] def ordering =
- throw
QueryExecutionErrors.orderedOperationUnsupportedByDataTypeError("PhysicalMapType")
- override private[sql] type InternalType = Any
+ // maps are not orderable, we use `ordering` just to support group by queries
+ override private[sql] def ordering = interpretedOrdering
+ override private[sql] type InternalType = MapData
@transient private[sql] lazy val tag = typeTag[InternalType]
+
+ @transient
+ private[sql] lazy val interpretedOrdering: Ordering[MapData] = new
Ordering[MapData] {
+ private[this] val keyOrdering =
+ PhysicalDataType(keyType).ordering.asInstanceOf[Ordering[Any]]
+ private[this] val valuesOrdering =
+ PhysicalDataType(valueType).ordering.asInstanceOf[Ordering[Any]]
+
+ override def compare(left: MapData, right: MapData): Int = {
Review Comment:
But order by is also not supported in codegen path.
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