How can I rank observations within groups in Stata?

Question

I have some data in Stata which look like the first two columns of:

group_id   var_to_rank  desired_rank
____________________________________

1           10         


        

Answer 1

Stumbled upon such solution on the Statalist:

bysort group_id (var_to_rank) : gen rank = var_to_rank != var_to_rank[_n-1]
by group_id : replace rank = sum(rank)

Seems to sort out this issue.