diff options
| -rw-r--r-- | R/pkg/R/functions.R | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/R/pkg/R/functions.R b/R/pkg/R/functions.R index dbf8dd89a2..369b1d00d9 100644 --- a/R/pkg/R/functions.R +++ b/R/pkg/R/functions.R @@ -2876,7 +2876,8 @@ setMethod("randn", signature(seed = "numeric"), #' regexp_extract #' -#' Extract a specific(idx) group identified by a java regex, from the specified string column. +#' Extract a specific \code{idx} group identified by a Java regex, from the specified string column. +#' If the regex did not match, or the specified group did not match, an empty string is returned. #' #' @param x a string Column. #' @param pattern a regular expression. |