Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/17901#discussion_r115303310
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
---
@@ -1148,13 +1148,6 @@ case class ToUTCTimestamp(left: Expression, right:
Expression)
/**
* Returns the date part of a timestamp or string.
*/
-@ExpressionDescription(
- usage = "_FUNC_(expr) - Extracts the date part of the date or timestamp
expression `expr`.",
- extended = """
- Examples:
- > SELECT _FUNC_('2009-07-30 04:17:52');
- 2009-07-30
- """)
--- End diff --
This seems not used.
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