Github user felixcheung commented on a diff in the pull request:
https://github.com/apache/spark/pull/20464#discussion_r165263961
--- Diff: R/pkg/R/column.R ---
@@ -169,7 +169,7 @@ setMethod("alias",
#' @note substr since 1.4.0
setMethod("substr", signature(x = "Column"),
function(x, start, stop) {
- jc <- callJMethod(x@jc, "substr", as.integer(start - 1),
as.integer(stop - start + 1))
+ jc <- callJMethod(x@jc, "substr", as.integer(start),
as.integer(stop - start + 1))
--- End diff --
I'm a bit concern with changing this. As you can see it's been like this
from the very beginning...
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