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https://issues.apache.org/jira/browse/ARROW-13262?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ian Cook updated ARROW-13262:
-----------------------------
    Summary: [R] transmute() fails after pulling data into R  (was: [R] Support 
namespacing of function maps?)

> [R] transmute() fails after pulling data into R
> -----------------------------------------------
>
>                 Key: ARROW-13262
>                 URL: https://issues.apache.org/jira/browse/ARROW-13262
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>            Reporter: Jonathan Keane
>            Priority: Major
>
> With our NSE function map setup, we translate various functions into Arrow 
> equivalents:
> {code}
> library(arrow)
> library(dplyr)
> arrow_table <- Table$create(tibble::tibble(
>   v = c("A", "B", "C"),
>   w = c("a", "b", "c"),
>   x = c("d", NA_character_, "f"),
>   y = c(NA_character_, "h", "i"),
>   z = c(1.1, 2.2, NA)
> ))
> arrow_table %>%
>   transmute(str_c(x, y, sep = " ")) %>%
>   collect()
> #> # A tibble: 3 x 1
> #>   `str_c(x, y, sep = " ")`
> #>   <chr>                   
> #> 1 <NA>                    
> #> 2 <NA>                    
> #> 3 f i
> {code}
> Which is great, however if the code that is being used uses the `sringr::` 
> namespace prefix this errors:
> {code}
> arrow_table %>%
>   transmute(stringr::str_c(x, y, sep = " ")) %>%
>   collect()
> #> Warning: Expression stringr::str_c(x, y, sep = " ") not supported in Arrow;
> #> pulling data into R
> #> Error: Problem with `mutate()` input `..1`.
> #> ℹ `..1 = ..1`.
> #> x object 'x' not found
> {code}
> Should we support this (basically *also* translate {{stringr::str_c()}} to 
> what we have for {{str_c()}})? Or warn/error more clearly what happened if we 
> don't support any namespace prefixed functions? Something else?



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