Hello everyone,
I have a data like this:
ID X1 X2
1 1 1
2 1 1
3 1 2
4 1 2
5 2 3
6 2 3
7 2 3
8 2 4
and I want to remove duplicate observations under X2 for every value under X1, which makes the data as such:
ID X1 X2
1 1 1
3 1 2
5 2 3
8 2 4
I was wondering how it can be done in SAS. Any idea/help is really appreciated!
I honestly think you didn't test my code. Well no worries, I did another test for you:-
18 data have;
19 input ID X1 X2;
20 datalines;
NOTE: The data set WORK.HAVE has 8 observations and 3 variables.
NOTE: DATA statement used (Total process time):
real time 0.01 seconds
cpu time 0.01 seconds
29 ;
30 proc sort data=have out=want nodupkey;
31 by x1 x2;
32 run;
NOTE: There were 8 observations read from the data set WORK.HAVE.
NOTE: 4 observations with duplicate key values were deleted.
NOTE: The data set WORK.WANT has 4 observations and 3 variables.
NOTE: PROCEDURE SORT used (Total process time):
real time 0.01 seconds
cpu time 0.01 seconds
Haven't you tried:
Proc sql;
select distinct ID , X1 , X2
from your_table;
quit;
data have;
input ID X1 X2;
datalines;
1 1 1
2 1 1
3 1 2
4 1 2
5 2 3
6 2 3
7 2 3
8 2 4
;
proc sort data=have out=want nodupkey;
by x1 x2;
run;
@novinosrin Thanks! However, it does not remove the duplicates. I had to add this to it:
data want ;
set want ;
by X1 X2;
if first.X2;
run;
I honestly think you didn't test my code. Well no worries, I did another test for you:-
18 data have;
19 input ID X1 X2;
20 datalines;
NOTE: The data set WORK.HAVE has 8 observations and 3 variables.
NOTE: DATA statement used (Total process time):
real time 0.01 seconds
cpu time 0.01 seconds
29 ;
30 proc sort data=have out=want nodupkey;
31 by x1 x2;
32 run;
NOTE: There were 8 observations read from the data set WORK.HAVE.
NOTE: 4 observations with duplicate key values were deleted.
NOTE: The data set WORK.WANT has 4 observations and 3 variables.
NOTE: PROCEDURE SORT used (Total process time):
real time 0.01 seconds
cpu time 0.01 seconds
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