mysql触发器trigger 实例详解
MySQL好像从5.0.2版本就开始支持触发器的功能了创建触发器CREATE TRIGGER trigger_name trigger_time trigger_event ON tb_name FOR EACH ROW trigger_stmttrigger_name：触发器的名称tirgger_time：触发时机，为BEFORE或者AFTERtrigger_event：触发事件...
