select the first row by id

[sasphd]

Hello

I want to select the first row by id like that

id r

1 6

1  7

2 89

2  98

want 

id r

1 6

2 89

[AMSAS]

You want to look at FIRST. and LAST. processing

[japelin · Accepted solution]

proc sort data=have;
  by id;
run;

data want;
  set have;
  by id;
  if first.id;
run;