MySQL触发器管理
MySQL没有一个像MSSQL的客户端去管理,所以有了phpMyAdmin,管理MySQL不再单纯依靠命令行,但phpMyAdmin似乎不是那么万能,偶尔也
MySQL没有一个像MSSQL的客户端去管理,所以有了phpMyAdmin,管理MySQL不再单纯依靠命令行,但phpMyAdmin似乎不是那么万能,偶尔也会耍耍版本细节的脾气。
最近使用MySQL触发器,不想使用命令行编辑,但phpMyAdmin调试缺比较麻烦,原来想的是先建立一个空的触发器,然后修改,后来发现修改迁移问题多的要死,在老王同学的帮助下,经过几个晚上努力,整理出一些规律。
调试的时候,可以在空的触发器上逐条增加语句,一点一点调试,这样很容易定位问题,迅速修改。
迁移的时候,不能直接编辑触发器拷贝里边的代码,,我用的phpMyAdmin是2.11.9*版本的,生成的代码虽然他自己认,但一迁移就出了问题,我还没去阅读phpMyAdmin的代码,不知道代码如何产生,但begin end里的内容大致相同,不同的是两头的辅助语句。
两头的内容跟版本密切相关,用MySQLdump导出的语句做模板,把过程添加到里边,基本就没什么问题了。
不同版本的语法稍有出入,没有详细总结,总之掌握了调试的方法,解决问题速度就会提升。
使用触发器后,原来十几次的交互,一次就可以解决。我尝试了下出发器和存储过程,发现开发成本都差不多,复杂度也是类似的,所以没有用存储过程。

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