Github user frreiss commented on a diff in the pull request:
https://github.com/apache/spark/pull/10428#discussion_r55293782
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
---
@@ -109,7 +121,13 @@ case class DateSub(startDate: Expression, days:
Expression)
})
}
}
-
+/*
+ * Returns the hour componemnt of the string/timestamp/interval
+ */
+@ExpressionDescription(
+ usage = "_FUNC_(timestamp_param) - Returns the hour componemnt of the
timestamp value.",
--- End diff --
*component
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