data one;
input id $ fruit $;
datalines;
a apple
a apple
b banana
c coconut
c coconut
c coconut
;
data two;
input id $ color $;
datalines;
a amber
b brown
b black
c cocoa
c cream
;
data every_combination;
/* Set one of your data sets, usually the larger data set */
set one;
do i=1 to n;
/* For every observation in the first data set, */
/* read in each observation in the second data set */
set two point=i nobs=n;
output;
end;
run;
高手解释一下,这个程序整个运行的过程啊?看不大懂!谢谢~~