I'd say native data frames in R aren't great at these (maybe #4, maybe #9). I'm excited to see how Arrow can perform, and hopefully we'll see solid bindings to

I'd say native data frames in R aren't great at these (maybe #4, maybe #9). I'm excited to see how Arrow can perform, and hopefully we'll see solid bindings to R as well. The data.table package (https://github.com/Rdatatable/data.table/wiki https://github.com/Rdatatable/data.table/wiki) does make progress on some of these - I'd say #1, #3, maybe #7, #8. Dplyr has a query planner too, fwiw.