First. and Last . in sas -

my data table looks :

name amount status 5000 debit 2000 credit 1000 credit b 2000 debit b 1000 debit b 1000 credit 

i want output be:

name net_amount status 2000 debit b 2000 debit 

how can achieve using first. , last. variables? in advance

data a; input name $ amount status $; cards; 5000 debit 2000 credit 1000 credit b 2000 debit b 1000 debit b 1000 credit ; run;  proc sort data=a;  name status amount;  run;  data by_name_first_obs by_name_and_status_first_obs      by_name_last_obs by_name_and_status_last_obs; set a; name status; if first.name output by_name_first_obs; if last.name output by_name_last_obs; if first.status output by_name_and_status_first_obs; if last.status output by_name_and_status_last_obs; run;