MySQL 使用触发器记录用户的操作日志问题
吾爱主题
阅读:183
2022-12-07 15:17:00
评论:0
MySQL 使用触发器记录用户的操作日志
使用 MySQL 触发器可以记录哪些用户、什么时间对数据表进行了增、删、改操作。如果执行删除操作,则记录删除之前的数据记录;如果执行更新操作,记录更新之前的数据记录。
一、创建用户数据表(emp)和保存操作日志的表(emp_log)
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | -- 创建用户数据表:emp DROP TABLE IF EXISTS `emp`; CREATE TABLE `emp` ( `emp_id` int (11) AUTO_INCREMENT COMMENT '员工id' , `emp_name` char (50) NOT NULL DEFAULT '' COMMENT '员工姓名' , `birth` date COMMENT '出生日期' , `salary` decimal (10,2) NOT NULL DEFAULT 0.00 COMMENT '工资' , `comm` decimal (10,2) NOT NULL DEFAULT 0.00 COMMENT '奖金' , `phone` char (20) NOT NULL DEFAULT '' COMMENT '电话' , `addr` varchar (200) NOT NULL DEFAULT '' COMMENT '地址' , `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP comment '插入记录的时间' , `updated_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP comment '最后更新记录的时间' , PRIMARY KEY (`emp_id`), KEY `idx_empname` (`emp_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT '员工信息数据表' ; -- 查看表结构 mysql> desc emp; + ------------+---------------+------+-----+-------------------+------------------------+ | Field | Type | Null | Key | Default | Extra | + ------------+---------------+------+-----+-------------------+------------------------+ | emp_id | int (11) | NO | PRI | NULL | auto_increment | | emp_name | char (50) | NO | MUL | | | | birth | date | YES | | NULL | | | salary | decimal (10,2) | NO | | 0.00 | | | comm | decimal (10,2) | NO | | 0.00 | | | phone | char (20) | NO | | | | | addr | varchar (200) | NO | | | | | created_at | timestamp | NO | | CURRENT_TIMESTAMP | | | updated_at | timestamp | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP | + ------------+---------------+------+-----+-------------------+------------------------+ 9 rows in set (0.00 sec) -- 创建操作日志表:emp_log DROP TABLE IF EXISTS `emp_log`; CREATE TABLE `emp_log` ( `emplog_id` int (11) AUTO_INCREMENT COMMENT '操作日志id' , `operate_type` char (20) COMMENT '操作类型:insert(插入)、delete(删除)、update(更新)' , `operate_user` char (50) COMMENT '执行操作的用户名称' , `operate_time` datetime COMMENT '操作时间' , `emp_id` int (11) COMMENT '员工id' , `emp_name` char (50) COMMENT '员工姓名' , `birth` date COMMENT '出生日期' , `salary` decimal (10,2) COMMENT '工资' , `comm` decimal (10,2) COMMENT '奖金' , `phone` char (20) COMMENT '电话' , `addr` varchar (200) COMMENT '地址' , PRIMARY KEY (`emplog_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT '员工操作日志信息表' ; -- 查看表结构 mysql> desc emp_log; + --------------+---------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | + --------------+---------------+------+-----+---------+----------------+ | emplog_id | int (11) | NO | PRI | NULL | auto_increment | | operate_type | char (20) | YES | | NULL | | | operate_user | char (50) | YES | | NULL | | | operate_time | datetime | YES | | NULL | | | emp_id | int (11) | YES | | NULL | | | emp_name | char (50) | YES | | NULL | | | birth | date | YES | | NULL | | | salary | decimal (10,2) | YES | | NULL | | | comm | decimal (10,2) | YES | | NULL | | | phone | char (20) | YES | | NULL | | | addr | varchar (200) | YES | | NULL | | + --------------+---------------+------+-----+---------+----------------+ 11 rows in set (0.01 sec) |
二、为 emp 表创建触发器
1、创建触发器 trigger_after_insert_emp
在 emp 表中插入记录时,把执行插入操作的用户名、操作类型(INSERT)、操作时间以及记录的内容添加到操作日志表(emp_log)中。
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | DROP TRIGGER IF EXISTS `trigger_after_insert_emp`; delimiter // create trigger trigger_after_insert_emp after insert on emp for each row begin insert into emp_log( operate_type, operate_user, operate_time, emp_id, emp_name, birth, salary, comm, phone, addr ) values ( 'INSERT' , user (), now(), new.emp_id, new.emp_name, new.birth, new.salary, new.comm, new.phone, new.addr ); end // delimiter ; |
2、创建触发器 trigger_after_update_emp
在 emp 表中更新记录时,把执行更新操作的用户名、操作类型(UPDATE)、操作时间以及更新之前记录的内容添加到操作日志表(emp_log)中。
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | DROP TRIGGER IF EXISTS `trigger_after_update_emp`; delimiter // create trigger trigger_after_update_emp after update on emp for each row begin insert into emp_log( operate_type, operate_user, operate_time, emp_id, emp_name, birth, salary, comm, phone, addr ) values ( 'UPDATE' , user (), now(), old.emp_id, old.emp_name, old.birth, old.salary, old.comm, old.phone, old.addr ); end // delimiter ; |
3、创建触发器 trigger_after_delete_emp
在 emp 表中删除记录时,把执行删除操作的用户名、操作类型(DELETE)、操作时间以及删除之前记录的内容添加到操作日志表(emp_log)中。
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | DROP TRIGGER IF EXISTS `trigger_after_delete_emp`; delimiter // create trigger trigger_after_delete_emp after delete on emp for each row begin insert into emp_log( operate_type, operate_user, operate_time, emp_id, emp_name, birth, salary, comm, phone, addr ) values ( 'DELETE' , user (), now(), old.emp_id, old.emp_name, old.birth, old.salary, old.comm, old.phone, old.addr ); end // delimiter ; |
三、数据验证
1、在 emp 中添加数据记录
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | /* insert into emp(emp_name,birth,salary,comm,phone,addr) values ( '刘红' , '1988-12-3' ,5000,1200, '13673521212' , '河南省新乡市' ), ( '王涛' , '1984-8-21' ,6000,700, '13755440012' , '河南省郑州市' ), ( '张静' , '1992-10-31' ,5500,800, '13073526644' , '河南省安阳市' ); */ mysql> insert into emp(emp_name,birth,salary,comm,phone,addr) -> values ( '刘红' , '1988-12-3' ,5000,1200, '13673521212' , '河南省新乡市' ), -> ( '王涛' , '1984-8-21' ,6000,700, '13755440012' , '河南省郑州市' ), -> ( '张静' , '1992-10-31' ,5500,800, '13073526644' , '河南省安阳市' ); Query OK, 3 rows affected (0.00 sec) Records: 3 Duplicates: 0 Warnings: 0 -- 查询 emp 表中的数据 mysql> select * from emp; + --------+----------+------------+---------+---------+-------------+--------------------+---------------------+---------------------+ | emp_id | emp_name | birth | salary | comm | phone | addr | created_at | updated_at | + --------+----------+------------+---------+---------+-------------+--------------------+---------------------+---------------------+ | 1 | 刘红 | 1988-12-03 | 5000.00 | 1200.00 | 13673521212 | 河南省新乡市 | 2022-12-04 15:40:08 | 2022-12-04 15:40:08 | | 2 | 王涛 | 1984-08-21 | 6000.00 | 700.00 | 13755440012 | 河南省郑州市 | 2022-12-04 15:40:08 | 2022-12-04 15:40:08 | | 3 | 张静 | 1992-10-31 | 5500.00 | 800.00 | 13073526644 | 河南省安阳市 | 2022-12-04 15:40:08 | 2022-12-04 15:40:08 | + --------+----------+------------+---------+---------+-------------+--------------------+---------------------+---------------------+ 3 rows in set (0.00 sec) -- 查询 emp_log 表中的数据 mysql> select * from emp_log; + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ | emplog_id | operate_type | operate_user | operate_time | emp_id | emp_name | birth | salary | comm | phone | addr | + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ | 1 | INSERT | root@localhost | 2022-12-04 15:40:08 | 1 | 刘红 | 1988-12-03 | 5000.00 | 1200.00 | 13673521212 | 河南省新乡市 | | 2 | INSERT | root@localhost | 2022-12-04 15:40:08 | 2 | 王涛 | 1984-08-21 | 6000.00 | 700.00 | 13755440012 | 河南省郑州市 | | 3 | INSERT | root@localhost | 2022-12-04 15:40:08 | 3 | 张静 | 1992-10-31 | 5500.00 | 800.00 | 13073526644 | 河南省安阳市 | + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ 3 rows in set (0.01 sec) |
2、在 emp 中更新数据记录
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | -- 更新 emp 表中的数据(更新了两条记录) mysql> update emp set salary = salary + 1000 where salary < 6000; Query OK, 2 rows affected (0.01 sec) Rows matched: 2 Changed: 2 Warnings: 0 -- 查询 emp 表中的数据 mysql> select * from emp; + --------+----------+------------+---------+---------+-------------+--------------------+---------------------+---------------------+ | emp_id | emp_name | birth | salary | comm | phone | addr | created_at | updated_at | + --------+----------+------------+---------+---------+-------------+--------------------+---------------------+---------------------+ | 1 | 刘红 | 1988-12-03 | 6000.00 | 1200.00 | 13673521212 | 河南省新乡市 | 2022-12-04 15:40:08 | 2022-12-04 15:47:56 | | 2 | 王涛 | 1984-08-21 | 6000.00 | 700.00 | 13755440012 | 河南省郑州市 | 2022-12-04 15:40:08 | 2022-12-04 15:40:08 | | 3 | 张静 | 1992-10-31 | 6500.00 | 800.00 | 13073526644 | 河南省安阳市 | 2022-12-04 15:40:08 | 2022-12-04 15:47:56 | + --------+----------+------------+---------+---------+-------------+--------------------+---------------------+---------------------+ 3 rows in set (0.00 sec) -- 查询 emp_log 表中的数据 mysql> select * from emp_log; + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ | emplog_id | operate_type | operate_user | operate_time | emp_id | emp_name | birth | salary | comm | phone | addr | + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ | 1 | INSERT | root@localhost | 2022-12-04 15:40:08 | 1 | 刘红 | 1988-12-03 | 5000.00 | 1200.00 | 13673521212 | 河南省新乡市 | | 2 | INSERT | root@localhost | 2022-12-04 15:40:08 | 2 | 王涛 | 1984-08-21 | 6000.00 | 700.00 | 13755440012 | 河南省郑州市 | | 3 | INSERT | root@localhost | 2022-12-04 15:40:08 | 3 | 张静 | 1992-10-31 | 5500.00 | 800.00 | 13073526644 | 河南省安阳市 | | 4 | UPDATE | root@localhost | 2022-12-04 15:47:56 | 1 | 刘红 | 1988-12-03 | 5000.00 | 1200.00 | 13673521212 | 河南省新乡市 | | 5 | UPDATE | root@localhost | 2022-12-04 15:47:56 | 3 | 张静 | 1992-10-31 | 5500.00 | 800.00 | 13073526644 | 河南省安阳市 | + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ 5 rows in set (0.01 sec) |
3、在 emp 中删除数据记录
?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | -- 删除 emp 表中的数据(删除了两条记录) mysql> delete from emp where salary = 6000; Query OK, 2 rows affected (0.02 sec) -- 查询 emp 表中的数据 mysql> select * from emp; + --------+----------+------------+---------+--------+-------------+--------------------+---------------------+---------------------+ | emp_id | emp_name | birth | salary | comm | phone | addr | created_at | updated_at | + --------+----------+------------+---------+--------+-------------+--------------------+---------------------+---------------------+ | 3 | 张静 | 1992-10-31 | 6500.00 | 800.00 | 13073526644 | 河南省安阳市 | 2022-12-04 15:40:08 | 2022-12-04 15:47:56 | + --------+----------+------------+---------+--------+-------------+--------------------+---------------------+---------------------+ 1 row in set (0.00 sec) -- 查询 emp_log 表中的数据 mysql> select * from emp_log; + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ | emplog_id | operate_type | operate_user | operate_time | emp_id | emp_name | birth | salary | comm | phone | addr | + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ | 1 | INSERT | root@localhost | 2022-12-04 15:40:08 | 1 | 刘红 | 1988-12-03 | 5000.00 | 1200.00 | 13673521212 | 河南省新乡市 | | 2 | INSERT | root@localhost | 2022-12-04 15:40:08 | 2 | 王涛 | 1984-08-21 | 6000.00 | 700.00 | 13755440012 | 河南省郑州市 | | 3 | INSERT | root@localhost | 2022-12-04 15:40:08 | 3 | 张静 | 1992-10-31 | 5500.00 | 800.00 | 13073526644 | 河南省安阳市 | | 4 | UPDATE | root@localhost | 2022-12-04 15:47:56 | 1 | 刘红 | 1988-12-03 | 5000.00 | 1200.00 | 13673521212 | 河南省新乡市 | | 5 | UPDATE | root@localhost | 2022-12-04 15:47:56 | 3 | 张静 | 1992-10-31 | 5500.00 | 800.00 | 13073526644 | 河南省安阳市 | | 6 | DELETE | root@localhost | 2022-12-04 15:52:21 | 1 | 刘红 | 1988-12-03 | 6000.00 | 1200.00 | 13673521212 | 河南省新乡市 | | 7 | DELETE | root@localhost | 2022-12-04 15:52:21 | 2 | 王涛 | 1984-08-21 | 6000.00 | 700.00 | 13755440012 | 河南省郑州市 | + -----------+--------------+----------------+---------------------+--------+----------+------------+---------+---------+-------------+--------------------+ 7 rows in set (0.00 sec) |
到此这篇关于MySQL 使用触发器记录用户的操作日志的文章就介绍到这了,更多相关mysql记录用户的操作日志内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家!
原文链接:https://blog.csdn.net/weixin_44377973/article/details/128173506
声明
1.本站遵循行业规范,任何转载的稿件都会明确标注作者和来源;2.本站的原创文章,请转载时务必注明文章作者和来源,不尊重原创的行为我们将追究责任;3.作者投稿可能会经我们编辑修改或补充。