MySQL 필드에서 0값을 방지하시겠습니까?

mysql> create table DemoTable(Value int);
Query OK, 0 rows affected (0.85 sec)

mysql> DELIMITER //
mysql> create trigger preventing_to_insert_zero_value
   before insert on DemoTable
   for each row
   begin
      if(new.Value = 0) then SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'You can not provide 0 value';
   END if;
end
//
Query OK, 0 rows affected (0.34 sec)
mysql> DELIMITER ;

mysql> insert into DemoTable values(0);
ERROR 1644 (45000): You cannot provide 0 value

mysql> insert into DemoTable values(10);
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values(-1000);
Query OK, 1 row affected (0.41 sec)

mysql> select *from DemoTable;

+-------+
| Value |
+-------+
| 10    |
| -1000 |
+-------+
2 rows in set (0.00 sec)