R bindings for the prqlc Rust library,
powered by savvy.
This version supports PRQL 0.11.2.
Requires R 4.2.0 or later.
This package can be installed from CRAN or R-universe. If available, a binary package will be installed.
# Install from CRAN
install.packages("prqlr")# Install from R-universe
install.packages("prqlr", repos = "https://prql.r-universe.dev")For source installation, pre-built Rust libraries may be available if
the environment variable NOT_CRAN is set to "true". (Or, set
LIBPRQLR_BUILD to "false")
Sys.setenv(NOT_CRAN = "true")
install.packages("prqlr")Or, the Rust toolchain (Rust 1.65 or later) must be configured to build the Rust library.
Please check the https://github.com/r-rust/hellorust repository for about Rust code in R packages.
library(prqlr)
"from mtcars | filter cyl > 6 | select {cyl, mpg}" |>
prql_compile() |>
cat()
#> SELECT
#> cyl,
#> mpg
#> FROM
#> mtcars
#> WHERE
#> cyl > 6
#>
#> -- Generated by PRQL compiler version:0.11.2 (https://prql-lang.org)PRQL’s pipelines can be joined by the newline character (\n), or
actual newlines in addition to |.
"from mtcars \n filter cyl > 6 \n select {cyl, mpg}" |>
prql_compile() |>
cat()
#> SELECT
#> cyl,
#> mpg
#> FROM
#> mtcars
#> WHERE
#> cyl > 6
#>
#> -- Generated by PRQL compiler version:0.11.2 (https://prql-lang.org)"from mtcars
filter cyl > 6
select {cyl, mpg}" |>
prql_compile() |>
cat()
#> SELECT
#> cyl,
#> mpg
#> FROM
#> mtcars
#> WHERE
#> cyl > 6
#>
#> -- Generated by PRQL compiler version:0.11.2 (https://prql-lang.org)Thanks to the {tidyquery} package, we can even convert a PRQL query to
a SQL query and then to a {dplyr} query!
"from mtcars
filter cyl > 6
select {cyl, mpg}" |>
prql_compile() |>
tidyquery::show_dplyr()
#> mtcars %>%
#> filter(cyl > 6) %>%
#> select(cyl, mpg)Using {prqlr} with {knitr} makes it easy to create documents that
lists PRQL queries and a translated SQL queries, or documents that lists
PRQL queries and tables of data retrieved by PRQL queries.
Please check the vignette vignette("knitr", "prqlr") for details.
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