remove duplicate ID that contains missing value

[Elaine_Y]

Hi, 

I am joining two datasets by proc sql. 

Hi, I hope to remove duplicate ids that contains missing values. The dataset look like below. Thank you very much!

id  age  gender outcome_1 outcome_2

1  67       2          .                   .

1  67       2          0                  0

2  55       1          .                   .

2  55       1          1                  1

3  40       2           .                  .

3  40       2           1                  1

[Reeza]

What do you expect as output?

[smantha · Accepted solution]

Hi do you know if you will have multiple ids with missing values or is it always two with one of them missing. If it is the latter you can sort the dataset by id and descending outcome_1. 

proc sort data =inp_data;
by id descending outcome_1;
run;

data inp_data;
set inp_data;
by id;
if first.id;
run;

[novinosrin]

data have;
input id  age  gender outcome_1 outcome_2;
cards;
1  67       2          .                   .

1  67       2          0                  0

2  55       1          .                   .

2  55       1          1                  1

3  40       2           .                  .

3  40       2           1                  1
;

data want;
 update have(obs=0) have;
 by id age gender;
run;

id	age	gender	outcome_1	outcome_2
1	67	2	0	0
2	55	1	1	1
3	40	2	1	1