Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/7605#discussion_r35348861
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/DecimalType.scala ---
@@ -53,18 +53,20 @@ case class DecimalType(precisionInfo:
Option[PrecisionInfo]) extends FractionalT
private[sql] val ordering = Decimal.DecimalIsFractional
private[sql] val asIntegral = Decimal.DecimalAsIfIntegral
- def precision: Int = precisionInfo.map(_.precision).getOrElse(-1)
+ def precision: Int = precisionInfo.map(_.precision).getOrElse(10)
- def scale: Int = precisionInfo.map(_.scale).getOrElse(-1)
+ def scale: Int = precisionInfo.map(_.scale).getOrElse(0)
- override def typeName: String = precisionInfo match {
- case Some(PrecisionInfo(precision, scale)) =>
s"decimal($precision,$scale)"
- case None => "decimal"
- }
+ override def typeName: String = s"decimal($precision,$scale)"
+
+ override def toString: String = s"DecimalType($precision,$scale)"
- override def toString: String = precisionInfo match {
- case Some(PrecisionInfo(precision, scale)) =>
s"DecimalType($precision,$scale)"
- case None => "DecimalType()"
+ private[sql] def isWiderThan(other: DataType): Boolean = other match {
--- End diff --
can you add scaladoc explaining the semantics of this function?
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