maropu commented on a change in pull request #30400:
URL: https://github.com/apache/spark/pull/30400#discussion_r525591825
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
##########
@@ -73,6 +73,21 @@ trait TimestampFormatterHelper extends
TimeZoneAwareExpression {
}
}
+@ExpressionDescription(
+ usage = "_FUNC_() - Returns the current timezone.",
+ examples = """
+ Examples:
+ > SELECT _FUNC_();
+ Asia/Shanghai
+ """,
+ group = "datetime_funcs",
+ since = "3.1.0")
+case class CurrentTimeZone() extends LeafExpression with Unevaluable {
Review comment:
Please update the golden file, too.
https://github.com/apache/spark/blob/master/sql/core/src/test/scala/org/apache/spark/sql/ExpressionsSchemaSuite.scala#L38-L41
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