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avepo
Fluorite | Level 6

Hi,

I have a dataset that I want to generate individual level dataset. I could do this by proc sort, data (retain, first.id) but I think proc sql would be more efficient in coding (some may not agree with this). Thanks

 

Currently I have

ID    flag1 flag2  flag3

1     1       0         1

1     0       1         0

2     1       1         0

2     0        1        0

 

I would want the output to look like

ID    flag1 flag2  flag3

1     1          1       1

2     1          1       0

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
novinosrin
Tourmaline | Level 20

Hi @avepo In my humble opinion, i would think you are better off using proc means/summary as you can take advantage of using variable lists and not bother typing max(var) one by one forever if you happen to have numerous flag vars.

 

Also it helps lazy people like me at best

 

data have;
input ID    flag1 flag2  flag3;
cards;
1     1       0         1
1     0       1         0
2     1       1         0
2     0        1        0
;

proc means data=have nway noprint;
class id;
var flag:;
output out=want(drop=_:) max=;
run;

View solution in original post

3 REPLIES 3
kiranv_
Rhodochrosite | Level 12

something like

 

proc sql;

select ID ,   max(flag1) as flag1, max( flag2 ) as flag2, max(flag3) as flag3

from have

group by id;

 

 

novinosrin
Tourmaline | Level 20

Hi @avepo In my humble opinion, i would think you are better off using proc means/summary as you can take advantage of using variable lists and not bother typing max(var) one by one forever if you happen to have numerous flag vars.

 

Also it helps lazy people like me at best

 

data have;
input ID    flag1 flag2  flag3;
cards;
1     1       0         1
1     0       1         0
2     1       1         0
2     0        1        0
;

proc means data=have nway noprint;
class id;
var flag:;
output out=want(drop=_:) max=;
run;
avepo
Fluorite | Level 6

Thank you both!

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