Mysql触发器脚本不工作

我一直试图在mysql中设置触发器无济于事。下面是与之相关的表格：Mysql触发器脚本不工作

mysql> describe ttloki; 
+-------------+-----------+------+-----+-------------------+-----------------------------+ 
| Field  | Type  | Null | Key | Default   | Extra      | 
+-------------+-----------+------+-----+-------------------+-----------------------------+ 
| Lokinumero | int(11) | NO | PRI | NULL    | auto_increment    | 
| Ttnumero | int(11) | NO | MUL | NULL    |        | 
| Kirjausaika | timestamp | NO |  | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP | 
+-------------+-----------+------+-----+-------------------+-----------------------------+ 
3 rows in set (0.00 sec) 

mysql> describe tyontekija; 
+----------+-------------+------+-----+---------+-------+ 
| Field | Type  | Null | Key | Default | Extra | 
+----------+-------------+------+-----+---------+-------+ 
| Numero | int(11)  | NO | PRI | NULL |  | 
| Sukunimi | varchar(40) | NO |  | NULL |  | 
| Etunimi | varchar(40) | NO |  | NULL |  | 
| Osasto | int(11)  | YES | MUL | NULL |  | 
| Lahios | varchar(40) | YES |  | NULL |  | 
| Postino | varchar(5) | NO | MUL | NULL |  | 
| Puhelin | varchar(16) | YES |  | NULL |  | 
| Palkka | int(11)  | YES |  | NULL |  | 
+----------+-------------+------+-----+---------+-------+ 
8 rows in set (0.00 sec)

我最后的试用触发器是这样的：

create trigger uusitt 
after insert on TYONTEKIJA 
for each row 
insert into TTLOKI(Ttnumero) values 
(old.TYONTEKIJA.Numero);

每当我试着插入TYONTEKIJA它给我说说什么是在触发值的误差。

mysql> insert into TYONTEKIJA(Numero,Sukunimi,Etunimi,Osasto,Lahios,Postino,Puhelin,Palkka) values 
    -> (220000, "Saarikoski", "Pekka", 5, "Umpikuja 1", "02760", "060-7358461", 3000); 
ERROR 1054 (42S22): Unknown column 'old.TYONTEKIJA.Numero' in 'field list'

我不明白如何正确设置这种触发器。我应该改变什么来解决这个问题？

来源

2012-10-03 Tiivi Taavi