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
proc sort data=have;
by id;
run;
data want;
set have;
by id;
if first.id;
run;
You want to look at FIRST. and LAST. processing
proc sort data=have;
by id;
run;
data want;
set have;
by id;
if first.id;
run;
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