one
x y z
1 A 27
1 A 33
1 B 45
2 A 52
2 B 69
3 B 70
4 A 82
4 C 91
data two ;
set one;
by x y;
if first.y;
run;
proc print data = two noobs;
run;
can somebody plz explain exactly what we are doing in this program and why i m getting this output
x y z
1 A 27
1 B 45
2 A 52
2 B 69
3 B 70
4 A 82
4 C 91
Not exactly sure what you want to have, but you are outputting the first record in var "y"
@sanyam13 wrote:
one
x y z
1 A 27
1 A 33
1 B 45
2 A 52
2 B 69
3 B 70
4 A 82
4 C 91
data two ;
set one;
by x y;
if first.y;
run;
proc print data = two noobs;
run;
can somebody plz explain exactly what we are doing in this program and why i m getting this output
x y z
1 A 27
1 B 45
2 A 52
2 B 69
3 B 70
4 A 82
4 C 91
The "If first.y;" statement says to keep the record only for the first of each group of y values for each X group.
Note that the 1 A 33 is not in the output as it is the second value of A for variable Y where X is 1.
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