The SETOF aggregation operator evaluates the expression expression for each member of the index set index-set. The result is the set that is formed by collecting the values returned by the operand expression. The operand can be a tuple expression . For example, the following code produces a set of tuples of numbers with their squared and cubed values:

proc optmodel;
   put (setof{i in 1..3}<i, i*i, i**3>);

Figure 8.32 shows the displayed output.

{<1,1,1>,<2,4,8>,<3,9,27>}