Hello SAS community, Can somebody suggest how to create a set of all possible pairs of observations (Cartesian product) without using proc sql? Say I have a data set test1: data test1;    do x=1 to 3;       y=x+10; output;    end; run; I would like to create a data set test2 that contains all possible combinations of x and y: data test2;    input x y;    datalines;       1  11       1  12       1  13       2  11       2  12       2  13       3  11       3  12       3  13 ; run; ... View more