Suppose there is a SAS dataset with following values -
Parent Child
A B
B C
D E
F G
G H
H I
and so on…..
This goes onto 1000s of observations/rows.
Now how do we identify from this dataset Grandparents and
Grandchildrens ?
- 5 Answers
- 15468 Views
- American Express, Barclays, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sumit
Suppose the above dataset name is work.old.
Data new;
Set work.old (first obs = 2);
Run;
Proc sql;
Select Old.parent as grandfather, Old. Child as father,
new.child as grandchild from work.Old as old, work.new as
new
where old.child = new.parent;
quit;
| Is This Answer Correct ? | 17 Yes | 0 No |
data dx;
infile datalines dsd dlm=',';
input parent :$8. child :$8.;
datalines;
A,B
B,C
D,E
F,G
G,H
H,I
;;;;
run;
data dy(rename=(parent=grandfather child=father)) ;
merge dx(firstobs=2 in =a rename=(child=grandchild
parent=child ))
dx(firstobs=1 in =b );
by child;
if a and b;
run;
proc print;
var grandfather father grandchild;
run;
| Is This Answer Correct ? | 15 Yes | 4 No |
Answer / altumish
A simple self Join:
data old;
input Parent $ Child $;
cards;
A B
B C
D E
F G
G H
H I
I J
J K
J L
P S
;
Proc sql;
Select Old.parent as grandfather, Old.Child as father,
new.child as grandchild from work.Old as old, work.Old as new
where old.child = new.parent;
quit;
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / jayant
data tet;
input par $ child $;
datalines;
A B
B C
C D
E F
;
run;
data tet1;
set tet;
grand=lag(par);
drop par;
run;
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / sas@freek
data family;
input parent $ child $;
datalines;
A B
B C
C D
D E
E F
F G
G H
H I
;
run;
data family_new(drop=parent child);
set family;
parent1=lag(parent);
child1=lag(child);
grand_child=child;
if _n_ ge 2;
run;
proc print data=family_new;
var parent1 grand_child;
run;
| Is This Answer Correct ? | 0 Yes | 2 No |
what r the job openings SAS for fresher graduates !
HOW MANY WAYS YOU CAN RETRIEVE THE DATA FROM ORACLE TABLES? WHAT IS ORACLE CLINICAL? HOW IT IS USEFUL?
3 Answers Accenture, Novartis,
What is the difference between nodup and nodupkey options?
20 Answers iFlex, Makro, Talwar,
what is sas business intelligence? : Sas-bi
Will it bother you if the guy at the next desk times the frequency and duration of your bathroom or coffee breaks on the grounds that ?you are getting paid twice as much as he is??
what are the best practices to process the large data sets in sas programming? : Sas-administrator
What does error:1 mean?
How would you invoke a macro? : sas-macro
Explain why double trailing @@ is used in input statement?
What statement do you code to tell SAS that it is to write to an external file? What statement do you code to write the record to the file?
what is sas metadata repository? : Sas-bi
Best trainer in hyderabad for sas banking.if any one have details pls provide contact details.
Teradata 
