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A表插入数据 mysql 触发器

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Release： 2016-06-06 09:41:18
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mysql

三个表
A 表 温度 压力
B表 温度最小 温度最大 压力最小压力最大
C表 （id 报警类型 ）
当向 A表插入数据后 如果 A表中的温度 低于B表中的最小温度或高于再大温度

A表中的压力 低于B表中的最小压力或高于再大压力
则向C表中添加记录
1 值为温度
2 值为压力
如果在范围内 则不需要向c表添加记录

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