gengliangwang commented on a change in pull request #35951:
URL: https://github.com/apache/spark/pull/35951#discussion_r833961223
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
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@@ -2999,17 +2999,20 @@ object SubtractDates {
// scalastyle:off line.size.limit
@ExpressionDescription(
- usage = "_FUNC_(sourceTz, targetTz, sourceTs) - Converts the timestamp
without time zone `sourceTs` from the `sourceTz` time zone to `targetTz`. ",
+ usage = "_FUNC_([sourceTz, ]targetTz, sourceTs) - Converts the timestamp
without time zone `sourceTs` from the `sourceTz` time zone to `targetTz`. ",
arguments = """
Arguments:
- * sourceTz - the time zone for the input timestamp
+ * sourceTz - the time zone for the input timestamp.
+ If it is missed, the current session time zone is used as
the source time zone.
* targetTz - the time zone to which the input timestamp should be
converted
* sourceTs - a timestamp without time zone
Review comment:
Shall we update the description of `sourceTs`?
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