MySQL触发器

MySQL触发器

在本节中,您将学习如何使用MySQL触发器。根据定义,触发器或数据库触发器是自动执行以响应特定事件的存储程序,例如在表中发生的插入,更新或删除。

数据库触发器是保护MySQL数据库中数据完整性的强大工具。此外,自动执行某些数据库操作(如日志记录,审核等)也很有用。

1.SQL触发器简介

  • SQL触发器是存储在数据库目录中的一组SQL语句。每当与表相关联的事件发生时,就会执行或触发SQL触发器,例如插入,更新或删除。
    参考阅读:http://www.yiibai.com/mysql/sql-triggers.html

2.MySQL触发器实现

3.在MySQL中创建触发器

4.为相同的触发事件和动作时间创建多个触发器

5.管理MySQL中的触发器

6.使用MySQL计划事件

  • MySQL事件是基于预定义的时间表运行的任务,因此有时它被称为预定事件。MySQL事件也被称为“时间触发”,因为它是由时间触发的,而不是像触发器这样的表更新作为触发条件。
    参考阅读:http://www.yiibai.com/mysql/working-mysql-scheduled-event.html

7.修改MySQL事件

 

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