presto-main/src/main/java/io/prestosql/type/DecimalOperators.java/DecimalOperators/indeterminate
class DecimalOperators:        @LiteralParameters({"p", "s"})
        @SqlType(StandardTypes.BOOLEAN)
        public static boolean indeterminate(@SqlType("decimal(p, s)") Slice value, @IsNull boolean isNull)
        {
            return isNull;
        }