Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/17809#discussion_r114067242
--- Diff: R/pkg/R/functions.R ---
@@ -3803,3 +3803,58 @@ setMethod("repeat_string",
jc <- callJStatic("org.apache.spark.sql.functions", "repeat",
x@jc, numToInt(n))
column(jc)
})
+
+#' explode_outer
+#'
+#' Creates a new row for each element in the given array or map column.
+#' Unlike \code{explode}, if the array/map is \code{null} or empty
+#' then \code{null} is produced.
+#'
+#' @param x Column to compute on
+#'
+#' @rdname explode_outer
+#' @name explode_outer
+#' @family collection_funcs
+#' @aliases explode_outer,Column-method
+#' @export
+#' @examples \dontrun{
+#' df <- createDataFrame(data.frame(
+#' id = c(1, 2, 3), text = c("a,b,c", NA, "d,e")
+#' ))
+#'
+#' head(select(df, df$id, explode_outer(split_string(df$text, ","))))
+#' }
+#' @note explode_outer since 2.3.0
+setMethod("explode_outer",
+ signature(x = "Column"),
+ function(x) {
+ jc <- callJStatic("org.apache.spark.sql.functions",
"explode_outer", x@jc)
+ column(jc)
+ })
+
+#' posexplode_outer
+#'
+#' Creates a new row for each element with position in the given array or
map column.
+#' Unlike \code{posexplode}, if the array/map is null or empty then the
row (null, null) is produced.
--- End diff --
do you want to put null in \code as L3810
typically I'd say `NULL` instead but this is actually null on JVM side so I
think it's ok as it is/
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