sas_program_cartesian_product.sas

/* create table of all possible 2019 determination level (DL) values */
data a_table;
	input DL $  DL2019;
	datalines;
	DL0 0
	DL1 1
	DL2 2
	DL3 3
	DL4 4
	;
run;

/* create table of all possible 2020 determination level (DL) values */
data b_table;
	input DL $ DL2020;
	datalines;
	DL1 1
	DL2 2
	DL3 3
	DL4 4
	;
run;

/* Create the cartesian product using both 2019 DLs and 2020 DLs */
proc sql;
	create table cartesian_dl (drop=DL) as
	select *
	from a_table, b_table;
quit;