R dplyr join on range of dates

Question

I want to join two tables xxx and yyy using a composite unique key and date ranges. In sql I would simply specify in the join but I cannot get

Answer 1

We could use fuzzy_inner_join from fuzzy_join

library(fuzzy_join)
fuzzy_inner_join(xxx, yyy,
              by = c("ID" = "ID",
                           "NRA"="NRA",
                           "date_low" =  "date",
                           "date_high" = "date"), 
              match_fun = list("==", "==", ">", "<"))