Github user anabranch commented on a diff in the pull request: https://github.com/apache/spark/pull/16138#discussion_r97470784 --- Diff: R/pkg/R/functions.R --- @@ -1730,24 +1730,82 @@ setMethod("toRadians", #' to_date #' -#' Converts the column into DateType. +#' Converts the column into DateType, optionally with a format. Returns null if input is invalid. +#' Specify formats according to: http://docs.oracle.com/javase/tutorial/i18n/format/simpleDateFormat.html #' -#' @param x Column to compute on. +#' @param x Column to parse. +#' @param format string to use to parse x Column to DateType. #' #' @rdname to_date #' @name to_date #' @family datetime_funcs #' @aliases to_date,Column-method #' @export -#' @examples \dontrun{to_date(df$c)} -#' @note to_date since 1.5.0 +#' @examples +#' \dontrun{ +#' to_date(df$c) +#' to_date(df$c, 'yyyy-MM-dd') +#' } +#' @note to_date(Column, format) since 2.2.0 setMethod("to_date", - signature(x = "Column"), - function(x) { + signature(x = "Column", format = "missing"), + function(x, format) { jc <- callJStatic("org.apache.spark.sql.functions", "to_date", x@jc) column(jc) }) +#' @rdname to_date +#' @name to_date +#' @family datetime_funcs +#' @aliases to_date,Column-method,character-method +#' @export +#' @note to_date(Column, format) since 2.2.0 +setMethod("to_date", +signature(x = "Column", format = "character"), +function(x, format) { + jc <- callJStatic("org.apache.spark.sql.functions", "to_date", x@jc, format) + column(jc) +}) + +#' to_timestamp +#' +#' Converts the column into DateType, optionally with a format. Returns null if input is invalid. +#' Specify formats according to: http://docs.oracle.com/javase/tutorial/i18n/format/simpleDateFormat.html --- End diff -- cleaned this up.
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