Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/18939#discussion_r132914547 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala --- @@ -81,7 +82,8 @@ case class CurrentDate(timeZoneId: Option[String] = None) * There is no code generation since this expression should get constant folded by the optimizer. */ @ExpressionDescription( - usage = "_FUNC_() - Returns the current timestamp at the start of query evaluation.") + usage = "_FUNC_() - Returns the current timestamp at the start of query evaluation.", + since = "1.5.0") --- End diff -- https://issues.apache.org/jira/browse/SPARK-8193 - date/time function: current_timestamp. 1.5.0
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