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[MINOR] Improve documentation for HiveStringType's

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The diff should be self-explanatory.

Author: Reynold Xin <rxin@databricks.com>

Closes #21897 from rxin/hivestringtypedoc.
This commit is contained in:
Reynold Xin 2018-07-27 15:34:06 -07:00 committed by Xiao Li
parent 10f1f19659
commit 34ebcc6b52
1 changed files with 6 additions and 2 deletions
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8
sql/catalyst/src/main/scala/org/apache/spark/sql/types/HiveStringType.scala
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@ -56,14 +56,18 @@ object HiveStringType {
}
/**
* Hive char type.
* Hive char type. Similar to other HiveStringType's, these datatypes should only used for
* parsing, and should NOT be used anywhere else. Any instance of these data types should be
* replaced by a [[StringType]] before analysis.
*/
case class CharType(length: Int) extends HiveStringType {
override def simpleString: String = s"char($length)"
}
/**
* Hive varchar type.
* Hive varchar type. Similar to other HiveStringType's, these datatypes should only used for
* parsing, and should NOT be used anywhere else. Any instance of these data types should be
* replaced by a [[StringType]] before analysis.
*/
case class VarcharType(length: Int) extends HiveStringType {
override def simpleString: String = s"varchar($length)"