wjones127 commented on code in PR #12751:
URL: https://github.com/apache/arrow/pull/12751#discussion_r848745606
##########
r/R/table.R:
##########
@@ -149,6 +149,75 @@ Table$create <- function(..., schema = NULL) {
#' @export
names.Table <- function(x) x$ColumnNames()
+#' @export
+rbind.Table <- function(...) {
+ tables <- list(...)
+
+ # assert they have same schema
+ schema <- tables[[1]]$schema
+ unequal_schema_idx <- which.min(lapply(tables, function(x) x$schema ==
schema))
+ if (unequal_schema_idx != 1) {
+ abort(c(
+ sprintf("Schema at index %i does not match the first schema",
unequal_schema_idx),
+ i = paste0("Schema 1:\n", schema$ToString()),
+ i = paste0(sprintf("Schema %d:\n", unequal_schema_idx),
+ tables[[unequal_schema_idx]]$schema$ToString())
+ ))
+ }
+
+ # create chunked array for each column
+ columns <- map(seq_len(tables[[1]]$num_columns), function(i) {
+ do.call(c, map(tables, ~ .[[i]]))
+ })
+
+ Table$create(!!!set_names(columns, names(schema)), schema = schema)
+}
+
+#' @export
+cbind.Table <- function(..., call = caller_env()) {
Review Comment:
Huh that's very odd. I get the same thing with your reprex there, but in my
reprex below it is working well as is:
```r
cbind(
record_batch(a = 1:2),
b = Array$create(4:6)
)
#> Error in `cbind()`:
#> ! Non-scalar inputs must have an equal number of rows.
#> ℹ ..1 has 2, ..2 has 3
cbind(
record_batch(a = 1:2),
b = c(1 + 4i, 2 + 3i)
)
#> Error in `cbind()`:
#> ! Error occurred when trying to convert input ..b to an Arrow Array
#> Caused by error:
#> ! Cannot infer type from vector
```
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
