cloud-fan commented on a change in pull request #26418: [SPARK-29783][SQL]
Support SQL Standard/ISO_8601 output style for interval type
URL: https://github.com/apache/spark/pull/26418#discussion_r345321431
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala
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@@ -281,6 +283,14 @@ abstract class CastBase extends UnaryExpression with
TimeZoneAwareExpression wit
// UDFToString
private[this] def castToString(from: DataType): Any => Any = from match {
+ case CalendarIntervalType => SQLConf.get.intervalOutputStyle match {
+ case SQL_STANDARD =>
+ buildCast[CalendarInterval](_, i =>
UTF8String.fromString(toSqlStandardString(i)))
+ case ISO_8601 =>
+ buildCast[CalendarInterval](_, i =>
UTF8String.fromString(toIso8601String(i)))
+ case _ =>
Review comment:
nit: it's recommended to specify the last enum instead of using a wildcard.
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