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MySQL 触发循环
原标题:MySQL trigger loop

我正在经历痛苦的打断过程,将他人编成法典。

因此,我决定重新启用一个新数据库,与旧数据库一起使用触发器在两个表格之间传输数据。

现在,我有一个问题,那就是,我听任我。

每张表格中都有一个更新另一个表格的触发点。 一旦更新,它就应当更新另一个表格,但由于两个表格都导致它只是会引发一个问题。

它们是阻止这种情况发生吗?

希望是有意义的,希望你们能够提出建议。

问题回答

您应当将数据输入一个db,并利用触发器将数据复制到第二个db。 说你对数据的存在进行核对,并退出触发器。 基本上只要有记录,就无所作为。 该网站具有良好的指导:

http://www.database Design-resource.com/mysql-triggers.html

你们可能想读一下我的SQL手册中的触发点:

http://dev.mysql.com/doc/refman/5.0/en/triggers.hthl





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