The SET Statement
The SET statement can be used to assign a value to local variables. The rule that any expression can be used applies here as well.
In the previous sections, we showed several examples of the SET statement. The following examples are also correct:
SET VAR1 = 1; SET VAR1 := 1; SET VAR1 = 1, VAR2 = VAR1;
In the last example, a value is assigned to VAR1 first, and that value is assigned to VAR2 via VAR1 next.