dragosmg commented on a change in pull request #12506:
URL: https://github.com/apache/arrow/pull/12506#discussion_r828219382
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File path: r/R/dplyr-funcs-datetime.R
##########
@@ -189,6 +189,65 @@ register_bindings_datetime <- function() {
})
}
+register_bindings_duration <- function() {
+ register_binding("difftime", function(time1,
+ time2,
+ tz,
+ units = c("auto", "secs", "mins",
+ "hours", "days", "weeks")) {
+ units <- match.arg(units)
+ if (units != "secs") {
+ abort("`difftime()` with units other than seconds not supported in
Arrow")
+ }
+
+ if (!missing(tz)) {
+ warn("`tz` is an optional argument to `difftime()` in R and will not be
used in Arrow")
+ }
+
+ time1 <- build_expr("cast", time1, options = cast_options(to_type =
timestamp()))
+ time2 <- build_expr("cast", time2, options = cast_options(to_type =
timestamp()))
Review comment:
~See above, but by casting to the `tz` passed as arg we were masking the
issue of `Scalar$create()` dropping the `tz` metadata. Casting to a different /
wrong `tz` had no material impact on the result, but now it does since Arrow
does not like subtracting a timezoned timestamp from a timezoneless one.~
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