A user with the OVERRIDE CONSTRAINT privilege can specify a UDF in the request, the execution of which is inserted as the constraint column value, if it is a valid value for the constraint.
INSERT table1 SELECT col1, col2, …, NonMacUDF(Level), … FROM table2;
where the value for the security constraint column “Level” (in table 1) is the result of executing the UDF "NonMacUDF."