Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/7348#discussion_r34541019
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/AbstractDataType.scala
---
@@ -96,6 +96,24 @@ private[sql] class TypeCollection(private val types:
Seq[AbstractDataType])
private[sql] object TypeCollection {
+ /**
+ * Types that can be ordered/compared. In the long run we should
probably make this a trait
+ * that can be mixed into each data type, and perhaps create an
[[AbstractDataType]].
+ */
+ val Ordered = TypeCollection(
+ BooleanType,
+ ByteType, ShortType, IntegerType, LongType,
+ FloatType, DoubleType, DecimalType,
+ TimestampType, DateType,
+ StringType)
+
+ /**
+ * Types that can be used in bitwise operations.
+ */
+ val Bitwise = TypeCollection(
+ BooleanType,
--- End diff --
Does boolean support bitwise?
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