Answer Posted / prakhar

SAS code could be linked using the GOTO or the Link statement.

The difference between the LINK statement and the GO TO statement is in the action of a subsequent RETURN statement. A RETURN statement after a LINK statement returns execution to the statement that follows LINK. A RETURN statement after a GO TO statement returns execution to the beginning of the DATA step, unless a LINK statement precedes GO TO, in which case execution continues with the first statement after LINK. In addition, a LINK statement is usually used with an explicit RETURN statement, whereas a GO TO statement is often used without a RETURN statement.

When your program executes a group of statements at several points in the program, using the LINK statement simplifies coding and makes program logic easier to follow. If your program executes a group of statements at only one point in the program, using DO-group logic rather than LINK-RETURN logic is simpler.

Goto eg.

data info;

input x;

if 1<=x<=5 then go to add;

put x=;

add: sumx+x;

datalines;

7

6

323

;

Link Eg.



data hydro;

input type $ depth station $;

/* link to label calcu: */

if type =’aluv’ then link calcu;

date=today();

/* return to top of step */

return;

calcu: if station=’site_1′

then elevatn=6650-depth;

else if station=’site_2′

then elevatn=5500-depth;

/* return to date=today(); */

return;

datalines;

aluv 523 site_1

uppa 234 site_2

aluv 666 site_2

…more data lines…

;



GOTO – http://support.sas.com/onlinedoc/913/getDoc/en/lrdict.hlp/a000201949.htm

LINK – http://support.sas.com/onlinedoc/913/getDoc/en/lrdict.hlp/a000201972.htm

i have a dataset with 100 obs i want to generate title from 20th obs onwards with total observations. that should contain 100 obs.dont use firstobs and dnt split the data. use dataset block or proc report? how can we genarate;

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