rqueryis a data wrangling system designed to express complex data manipulation as a series of simple data transforms. This is in the spirit of
dplyr::mutate()and uses a pipe in the style popularized in
magrittr. The operators themselves follow the selections in Codd’s relational algebra, with the addition of the traditional
SQL“window functions.” More on the background and context of
rquerycan be found here.
Check it out.