Is there a way to select a max row for each group in SQL ( with distinct code )

Dear friends, 

My table is as show in below…  for each ‘grpid’ I want get row with Max tiv value and code should be distinct. Ie in result, code & grpid will come only once.

Result:    ( we are selecting   IN even though for grpid 2 ‘GB’ has max value)

-Sajid