Using a computed column works fine in distinct but when simply renaming a column it doesn't use this column for uniqueness and also doesn't rename the column.
library(dplyr)
#>
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#>
#> filter, lag
#> The following objects are masked from 'package:base':
#>
#> intersect, setdiff, setequal, union
# works as expected
mtcars %>%
distinct(cyl2 = cyl + 1)
#> cyl2
#> 1 7
#> 2 5
#> 3 9
# distinct not applied, column not renamed
mtcars %>%
distinct(cyl2 = cyl)
#> mpg cyl disp hp drat wt qsec vs am gear carb
#> Mazda RX4 21.0 6 160.0 110 3.90 2.620 16.46 0 1 4 4
#> Mazda RX4 Wag 21.0 6 160.0 110 3.90 2.875 17.02 0 1 4 4
#> Datsun 710 22.8 4 108.0 93 3.85 2.320 18.61 1 1 4 1
#> Hornet 4 Drive 21.4 6 258.0 110 3.08 3.215 19.44 1 0 3 1
#> Hornet Sportabout 18.7 8 360.0 175 3.15 3.440 17.02 0 0 3 2
#> Valiant 18.1 6 225.0 105 2.76 3.460 20.22 1 0 3 1
#> Duster 360 14.3 8 360.0 245 3.21 3.570 15.84 0 0 3 4
#> Merc 240D 24.4 4 146.7 62 3.69 3.190 20.00 1 0 4 2
#> Merc 230 22.8 4 140.8 95 3.92 3.150 22.90 1 0 4 2
#> Merc 280 19.2 6 167.6 123 3.92 3.440 18.30 1 0 4 4
#> Merc 280C 17.8 6 167.6 123 3.92 3.440 18.90 1 0 4 4
#> Merc 450SE 16.4 8 275.8 180 3.07 4.070 17.40 0 0 3 3
#> Merc 450SL 17.3 8 275.8 180 3.07 3.730 17.60 0 0 3 3
#> Merc 450SLC 15.2 8 275.8 180 3.07 3.780 18.00 0 0 3 3
#> Cadillac Fleetwood 10.4 8 472.0 205 2.93 5.250 17.98 0 0 3 4
#> Lincoln Continental 10.4 8 460.0 215 3.00 5.424 17.82 0 0 3 4
#> Chrysler Imperial 14.7 8 440.0 230 3.23 5.345 17.42 0 0 3 4
#> Fiat 128 32.4 4 78.7 66 4.08 2.200 19.47 1 1 4 1
#> Honda Civic 30.4 4 75.7 52 4.93 1.615 18.52 1 1 4 2
#> Toyota Corolla 33.9 4 71.1 65 4.22 1.835 19.90 1 1 4 1
#> Toyota Corona 21.5 4 120.1 97 3.70 2.465 20.01 1 0 3 1
#> Dodge Challenger 15.5 8 318.0 150 2.76 3.520 16.87 0 0 3 2
#> AMC Javelin 15.2 8 304.0 150 3.15 3.435 17.30 0 0 3 2
#> Camaro Z28 13.3 8 350.0 245 3.73 3.840 15.41 0 0 3 4
#> Pontiac Firebird 19.2 8 400.0 175 3.08 3.845 17.05 0 0 3 2
#> Fiat X1-9 27.3 4 79.0 66 4.08 1.935 18.90 1 1 4 1
#> Porsche 914-2 26.0 4 120.3 91 4.43 2.140 16.70 0 1 5 2
#> Lotus Europa 30.4 4 95.1 113 3.77 1.513 16.90 1 1 5 2
#> Ford Pantera L 15.8 8 351.0 264 4.22 3.170 14.50 0 1 5 4
#> Ferrari Dino 19.7 6 145.0 175 3.62 2.770 15.50 0 1 5 6
#> Maserati Bora 15.0 8 301.0 335 3.54 3.570 14.60 0 1 5 8
#> Volvo 142E 21.4 4 121.0 109 4.11 2.780 18.60 1 1 4 2
mtcars %>%
distinct(cyl1 = cyl + 1, cyl2 = cyl)
#> cyl1
#> 1 7
#> 2 5
#> 3 9
Session info
devtools::session_info()
#> Session info -------------------------------------------------------------
#> setting value
#> version R version 3.4.0 (2017-04-21)
#> system x86_64, darwin15.6.0
#> ui X11
#> language (EN)
#> collate en_US.UTF-8
#> tz UTC
#> date 2017-12-01
#> Packages -----------------------------------------------------------------
#> package * version date source
#> assertthat 0.2.0 2017-04-11 CRAN (R 3.4.0)
#> backports 1.1.1 2017-09-25 CRAN (R 3.4.2)
#> base * 3.4.0 2017-04-21 local
#> bindr 0.1 2016-11-13 cran (@0.1)
#> bindrcpp * 0.2 2017-06-17 CRAN (R 3.4.0)
#> compiler 3.4.0 2017-04-21 local
#> datasets * 3.4.0 2017-04-21 local
#> devtools 1.13.4 2017-11-09 CRAN (R 3.4.2)
#> digest 0.6.12 2017-01-27 CRAN (R 3.4.0)
#> dplyr * 0.7.4.9000 2017-11-22 Github (tidyverse/dplyr@fc66342)
#> evaluate 0.10 2016-10-11 CRAN (R 3.4.0)
#> glue 1.2.0 2017-10-29 CRAN (R 3.4.0)
#> graphics * 3.4.0 2017-04-21 local
#> grDevices * 3.4.0 2017-04-21 local
#> htmltools 0.3.6 2017-04-28 CRAN (R 3.4.0)
#> knitr 1.17 2017-08-10 CRAN (R 3.4.1)
#> magrittr 1.5 2014-11-22 CRAN (R 3.4.0)
#> memoise 1.1.0 2017-04-21 CRAN (R 3.4.0)
#> methods * 3.4.0 2017-04-21 local
#> pillar 0.0.0.9000 2017-11-22 Github (r-lib/pillar@5a082e1)
#> pkgconfig 2.0.1 2017-03-21 cran (@2.0.1)
#> purrr 0.2.4 2017-10-18 cran (@0.2.4)
#> R6 2.2.2 2017-06-17 cran (@2.2.2)
#> Rcpp 0.12.13 2017-09-28 cran (@0.12.13)
#> rlang 0.1.4 2017-11-05 cran (@0.1.4)
#> rmarkdown 1.8 2017-11-17 CRAN (R 3.4.2)
#> rprojroot 1.2 2017-01-16 CRAN (R 3.4.0)
#> stats * 3.4.0 2017-04-21 local
#> stringi 1.1.6 2017-11-17 CRAN (R 3.4.2)
#> stringr 1.2.0 2017-02-18 CRAN (R 3.4.0)
#> tibble 1.3.4.9003 2017-11-22 Github (tidyverse/tibble@60281b3)
#> tidyselect 0.2.3 2017-11-06 CRAN (R 3.4.2)
#> tools 3.4.0 2017-04-21 local
#> utils * 3.4.0 2017-04-21 local
#> withr 2.1.0 2017-11-01 cran (@2.1.0)
#> yaml 2.1.14 2016-11-12 CRAN (R 3.4.0)
Using a computed column works fine in distinct but when simply renaming a column it doesn't use this column for uniqueness and also doesn't rename the column.
Session info