Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/18447#discussion_r186278702
--- Diff: R/pkg/R/functions.R ---
@@ -679,6 +679,19 @@ setMethod("hash",
column(jc)
})
+#' @details
+#' \code{data_type}: Returns the data type of a given column.
+#'
+#' @rdname column_misc_functions
+#' @aliases data_type data_type,Column-method
+#' @examples \dontrun{data_type(df$c)}
--- End diff --
see this line of the code example of hash
https://github.com/mmolimar/spark/blob/ed52e2f856f78fb2dca23b6be2f682caa0a88c81/R/pkg/R/functions.R#L176
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