RowOrdering¶

isOrderable¶

isOrderable(
  dataType: DataType): Boolean
isOrderable(
  exprs: Seq[Expression]): Boolean

isOrderable holds true when the DataType is one of the following:

• NullType
• AtomicType
• StructType with all fields orderable (recursive)
• ArrayType with orderable type of the elements
• UserDefinedType

isOrderable is used when:

• JoinSelection execution planning strategy is executed (and SortMergeJoinExec is considered)
• FIXME