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Kc2
Quartz | Level 8 Kc2
Quartz | Level 8

Hello,

 

I Have a data set which has 2 Ids values: ID1 and ID2. I would like to set a flag for all the records where ID2 in ne record is ID1 in another record and vice versa.

 

ID1  ID2  FLAG
A       B       1
B       A       1
C      G      0
E                0
F      H       0

 

 

Any Idea ?

 

Thanks

KC

1 ACCEPTED SOLUTION

Accepted Solutions
novinosrin
Tourmaline | Level 20
data have;
input ID1 $ ID2 $;
cards;
A       B       1
B       A       1
C      G      0
E       .         0
F      H       0
;

proc sql;
create table want as
select a.*,(a.id1=b.id2) as Flag
from have a left join have b
on a.id1=b.id2;
quit;

View solution in original post

2 REPLIES 2
novinosrin
Tourmaline | Level 20
data have;
input ID1 $ ID2 $;
cards;
A       B       1
B       A       1
C      G      0
E       .         0
F      H       0
;

proc sql;
create table want as
select a.*,(a.id1=b.id2) as Flag
from have a left join have b
on a.id1=b.id2;
quit;
Kc2
Quartz | Level 8 Kc2
Quartz | Level 8

thank you it worked. I was thinking about a loop or an array but this is easier.

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