How to get the last 4 digits of SSN from this data?
data SSN;
input SSN $;
cards;
123456789
12345678
1234567
;
run;
With your data step you lose already the "9" in the first row.
data SSN;
input SSN :$9.; /* The default length 8 is insufficient! */
cards;
123456789
12345678
1234567
;
run;
data want;
set ssn;
length last4d $4;
last4d=substr(ssn,length(ssn)-3);
run;
last4 = substrn(ssn,lengthn(ssn)-4+1);
With your data step you lose already the "9" in the first row.
data SSN;
input SSN :$9.; /* The default length 8 is insufficient! */
cards;
123456789
12345678
1234567
;
run;
data want;
set ssn;
length last4d $4;
last4d=substr(ssn,length(ssn)-3);
run;
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