I have two datasets, e and f.
data e;
input cycle tot1 tot2;
cards;
205 10 30
205 20 40
;
run;
data f;
infile cards missover;
input cycle tot1 ;
cards;
205 .
205 50
;
run;
The expected dataset would be:
cycle tot1 tot2
205 10 30
205 50 40
>>>>>
Test code :
data g;
merge e(in=a) f(rename=(tot1=t1 tot2=t2));
by cycle;
array t(2) t1-t2;
array tot(2) tot1-tot2;
do i=1 to 2;
if t(i)^= . then tot(i)=t(i);
end;
if a ;
drop t1 t2 i;
run;
data e; input cycle tot1 tot2; n+1; cards; 205 10 30 205 20 40 ; data f; infile cards missover; input cycle tot1; n+1; cards; 205 . 205 50 ; data want; update e f; by cycle n; drop n; run;
Below building on the code you provided.
data e;
input cycle tot1 tot2;
cards;
205 10 30
205 20 40
;
data f;
infile cards missover;
input cycle tot1;
cards;
205 .
205 50
;
/* option 1: coalesce() will pick the first non-missining value */
data g_1;
merge e(in=a) f(rename=(tot1=_tot1));
tot1=coalesce(_tot1,tot1);
drop _tot1;
run;
/* option 2: if _tot1 not missing then use it to populate tot1 */
data g_2;
merge e(in=a) f(rename=(tot1=_tot1));
if _tot1 ne . then tot1=_tot1;
drop _tot1;
run;
data e; input cycle tot1 tot2; n+1; cards; 205 10 30 205 20 40 ; data f; infile cards missover; input cycle tot1; n+1; cards; 205 . 205 50 ; data want; update e f; by cycle n; drop n; run;
Patric and KSharp:
Thanks to both of you for providing excellent solution. I appreciate your time and interest and service to SAS Community.
Regards,
GPatel
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