Hi All,
I have 2 data sets for parents and child, like this:
Set A
ID Mother_ID Father_ID
1 . 1
2 2 .
3 . .
Set B
ID X
1 a
2 b
3 c
Question:
How can I merge two data sets to get a data set like this ( 3 is a child):
ID X X_Mother X_Father
3 c b a
Thanks!
data a;
input id mid fid;
datalines;
1 . 1
2 2 .
3 . .
;
run;
data b;
input id X $1.;
datalines;
1 a
2 b
3 c
;
run;
Get the ID for Mother(m) and Father(f)
data have;
retain m f;
set a end = eof;
if mid then m = _N_;
else if fid then f = _N_;
if eof then output;
keep m f;
run;
Use m and f to name the Variables, X_Mother and X_Father respectively.
data want;
if _n_ = 1 then set have;
set b end = last;
retain X_Mother X_Father;
if id = m then X_Mother = X;
else if id = f then X_Father = X;
if last and X = 'c';
keep X:;
run;
Hi,
Where is the actual relation between Child and Parents - in which dataset?
data a;
input id mid fid;
datalines;
1 . 1
2 2 .
3 . .
;
run;
data b;
input id X $1.;
datalines;
1 a
2 b
3 c
;
run;
Get the ID for Mother(m) and Father(f)
data have;
retain m f;
set a end = eof;
if mid then m = _N_;
else if fid then f = _N_;
if eof then output;
keep m f;
run;
Use m and f to name the Variables, X_Mother and X_Father respectively.
data want;
if _n_ = 1 then set have;
set b end = last;
retain X_Mother X_Father;
if id = m then X_Mother = X;
else if id = f then X_Father = X;
if last and X = 'c';
keep X:;
run;
Dear datasp - this works. Thanks a lot!
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