用mysql触发器实现log记录

+-------+---------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------+---------------+------+-----+---------+----------------+ | id | int(11) | NO | PRI | NULL | auto_increment | | money | decimal(10,2) | NO | | NULL | | | op | char(10) | YES | | NULL | | +-------+---------------+------+-----+---------+----------------+ 3 rows in set (0.00 sec) mysql> desc log; +-------------+-----------+------+-----+-------------------+-----------------------------+ | Field | Type | Null | Key | Default | Extra | +-------------+-----------+------+-----+-------------------+-----------------------------+ | id | int(11) | NO | PRI | NULL | auto_increment | | op | char(10) | YES | | NULL | | | oid | int(11) | NO | | NULL | | | last_update | timestamp | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP | +-------------+-----------+------+-----+-------------------+-----------------------------+ 4 rows in set (0.00 sec)

创建一个触发器

mysql> delimiter $$
mysql> create trigger pay_log after insert on pay for each row begin insert into log set oid=new.id, op=new.op; end;$$
mysql> delimiter ;

参看触发器是否创建成功

mysql> show triggers\G;
*************************** 1. row ***************************
             Trigger: pay_log
               Event: INSERT
               Table: pay
           Statement: begin insert into log set oid=new.id, op=new.op; end
              Timing: AFTER
             Created: NULL
            sql_mode: 
             Definer: root@localhost
character_set_client: latin1
collation_connection: latin1_swedish_ci
  Database Collation: utf8_general_ci
1 row in set (0.00 sec)

ERROR: 
No query specified

测试

mysql> insert into pay set money=123,op=‘jimmy‘;

mysql> select * from pay;
+----+--------+-------+
| id | money  | op    |
+----+--------+-------+
|  3 | 123.00 | jimmy |
|  4 | 123.00 | jimmy |
+----+--------+-------+
2 rows in set (0.00 sec)

mysql> select * from log;
+----+-------+-----+---------------------+
| id | op    | oid | last_update         |
+----+-------+-----+---------------------+
|  1 | jimmy |   3 | 2015-05-16 16:32:05 |
|  2 | jimmy |   4 | 2015-05-16 16:32:51 |
+----+-------+-----+---------------------+
2 rows in set (0.00 sec)

同理还可以再创建一个update和delete的触发器

 

题外话

      创建触发器的时候发现没有权限，启动参数加上--skip-grant-table解决

用mysql触发器实现log记录

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