How to emulate SQLs rank functions in R?

Question

What is the R equivalent of rank functions like the Oracle ROW_NUMBER(), RANK(), or DENSE_RANK() (\"assign integer values to the rows

Answer 1

I don't think there's a direct equivalent to Oracle's Analytic functions. Plyr will likely be able to achieve some of the analytic functions, but not all directly. I'm sure R can replicate each function separately but I don't think there's a single package that will do it all.

If there's a specific operation you need to achieve in R, then do some googling, and if you come up empty, ask a specific question here on StackOverflow.