how do i get last 10obs from a dataset when we don't know about the numbe

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how do i get last 10obs from a dataset when we don't know
about the number of obsevations in that dataset?

Question Posted / naveen

7 Answers
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how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / raghu

proc sql;
select count(*) into : cnt from ds;
quit;

data ds1;
set ds(firstobs=%eval(&cnt-9) obs=&cnt);
run;

Is This Answer Correct ?

21 Yes

0 No

how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / shiva

data a;
do i=1 to 100;
output;
end;
run;

data data1;
set a nobs=tot;
if _n_ gt( tot-10) then output data1;
run;

Is This Answer Correct ?

20 Yes

4 No

how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / harshal r

data air;
set sashelp.air nobs=tot;
if _n_ gt( tot-10) then output;
run;

Is This Answer Correct ?

8 Yes

1 No

how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / naveen

Thank you Shiva

Is This Answer Correct ?

6 Yes

6 No

how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / pratik

Suppose we have dataset like sasuser.admit.

we dontknow how many obs are there in this dataset.

then we can use
Proc contents data=sasuser.admit n;
run;
it will come the total no of obs in this dataset.

after doing this you will get 21 obs are there.

data dsn1;
set sasuser.admit(firstobs=12 obs=21);
run;
proc print data=dsn1;
run;
then you will get last 10 obs.

Is This Answer Correct ?

2 Yes

2 No

how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / sumit

data new;
set old;
n = _N_;
run;

Proc sort data = new;
by descending n;
run;
Option OBS= 10;
Proc sort data = new (drop = n);
by descending n;
run;

Is This Answer Correct ?

2 Yes

3 No

how do i get last 10obs from a dataset when we don't know about the number of obsevations in ..

Answer / its me

Shiva, ur answer is also correct . and here goes another
one dear..

data W;
set X;
if _n_ > 95 then output;
run;

As the total no. of obs are 100, the last five observations
will be be in ur output dataset..
Cheers!!!

Is This Answer Correct ?

1 Yes

14 No

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