Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/18114#discussion_r123419433
--- Diff: R/pkg/R/functions.R ---
@@ -2414,20 +2396,23 @@ setMethod("from_json", signature(x = "Column",
schema = "structType"),
column(jc)
})
-#' from_utc_timestamp
-#'
-#' Given a timestamp, which corresponds to a certain time of day in UTC,
returns another timestamp
-#' that corresponds to the same time of day in the given timezone.
+#' @details
+#' \code{from_utc_timestamp}: Given a timestamp, which corresponds to a
certain time of day in UTC,
+#' returns another timestamp that corresponds to the same time of day in
the given timezone.
#'
-#' @param y Column to compute on.
-#' @param x time zone to use.
+#' @rdname column_datetime_diff_functions
#'
-#' @family date time functions
-#' @rdname from_utc_timestamp
-#' @name from_utc_timestamp
-#' @aliases from_utc_timestamp,Column,character-method
+#' @aliases from_utc_timestamp from_utc_timestamp,Column,character-method
#' @export
-#' @examples \dontrun{from_utc_timestamp(df$t, 'PST')}
+#' @examples
+#'
+#' \dontrun{
+#' tmp <- mutate(df, from_utc = from_utc_timestamp(df$time, 'PST'),
+#' to_utc = to_utc_timestamp(df$time, 'PST'),
+#' to_unix = unix_timestamp(df$time),
+#' to_unix2 = unix_timestamp(df$time, 'yyyy-MM-dd HH'),
+#' from_unix = from_unixtime(unix_timestamp(df$time)))
--- End diff --
Actually, what I found was the documentation for `unix_timestamp` and
`from_unixtime` was in `column_datetime_functions` but the examples in
`column_datetime_diff_functions`.
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