dongjoon-hyun commented on a change in pull request #29905:
URL: https://github.com/apache/spark/pull/29905#discussion_r498582542
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File path: R/pkg/R/functions.R
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@@ -3298,6 +3298,42 @@ setMethod("lead",
column(jc)
})
+#' @details
+#' \code{nth_value}: Window function: returns the value that is the
\code{offset}th
+#' row of the window frame# (counting from 1), and \code{null} if the size of
window
+#' frame is less than \code{offset} rows.
+#'
+#' @param offset a numeric indicating number of row to use as the value
+#' @param na.rm a logical which indicates that the Nth value should skip null
in the
+#' determination of which row to use
+#'
+#' @rdname column_window_functions
+#' @aliases nth_value nth_value,characterOrColumn-method
+#' @examples
+#' \dontrun{
+#' nth_value(df$mpg, 3)
+#' nth_value(df$mpg, 3, TRUE)
+#' }
Review comment:
Shall we remove this examples because this is insufficient in any way?
And, for me, it seems that all the other `column_window_functions` around here
also doesn't provide example because it's difficult to give a reproducible
short example here.
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