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fjoin  

Data Frame Joins Leveraging 'data.table'
View on CRAN: Click here


Download and install fjoin package within the R console
Install from CRAN:
install.packages("fjoin")

Install from Github:
library("remotes")
install_github("cran/fjoin")

Install by package version:
library("remotes")
install_version("fjoin", "0.1.0")



Attach the package and use:
library("fjoin")
Maintained by
Toby Robertson
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2025-12-11
Latest Update: 2025-12-11
Description:
Extends 'data.table' join functionality, lets it work with any data frame class, and provides a familiar 'x'/'y'-style interface, enabling broad use across R. Offers NA-safe matching by default, on-the-fly column selection, multiple match-handling on both sides, 'x' or 'y' row order, and a row origin indicator. Performs inner, left, right, full, semi- and anti-joins with equality and inequality conditions, plus cross joins. Specific support for 'data.table', (grouped) tibble, and 'sf'/'sfc' objects and their attributes; returns a plain data frame otherwise. Avoids data-copying of inputs and outputs. Allows displaying the 'data.table' code instead of (or as well as) executing it.
How to cite:
Toby Robertson (2025). fjoin: Data Frame Joins Leveraging 'data.table'. R package version 0.1.0, https://cran.r-project.org/web/packages/fjoin. Accessed 13 Mar. 2026.
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