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放在数据库的数据用什么分隔好

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Jun 06, 2016 pm 08:43 PM

phpdatabase

我在前台接到很多组数据，A1，B1，A2,B2...其中A（时间）和B（内容）的性质都一样，在数据库我只想用一个text字段存着就算了，因此他们之间要个字符进行分隔，用的时候再分割字符串，但不知用什么字符好，又怕这个字符和B里的内容相同，分割出错，给个建议

回复内容：

不考虑索引和性能的情况下：
1 如果每个内容的类型都都是数字或无分隔符的汉字，可以用逗号或分号分割，如1，2，3 或欢乐，悲伤，如果需要用到Like，则要这样用,1,2,3,(注意开头和结尾都有分隔符)
2 如果内容为带符号的字符串或多种类型，将其序列化为JSON或XML来存储，如{time:2014-05-06,content:"中国人民，代码什么的，都好像不是什么问题，。。。。"}
3 如果楼主实在想存在一起，用多个特殊符号分割如2014-05-06@@"中国人民，代码什么的，都好像不是什么问题，。。。。"
但是，以上方式无法使用索引
换个思路，为什么要这么存？
1 A1，B1，A2,B2...其中A（时间）和B（内容）的性质都一样？时间和内容的性质怎么会是一样的呢，这个保存下来后，要根据时间或内容做查找吗？如果要，那么楼主的方案是不对的，而且根据楼主的说法，恒定有A，B两个字段，为什么要存在一起呢？
2 如果A1，B1是动态字段，那么如果楼主是否有根据条件筛选的需求呢？如果只是简单的搜索，那么可以尝试下数据库+全文检索，如果需要做字段筛选，如时间段筛选，考虑Redis来实现该块业务，如果频繁出现，考虑设计上抽象合理性或考虑MongoDb这样的数据库

不知道{key:value}这种形式适不适合你用，因为感觉JSON的格式load回来会比较方便，而且格式也可以做检查，大多数语言都支持...
不过不就用两列呢，这样你这些事都不用做了...´・ω・｀？

自己顶一个分隔符,取回的时候按照定义来分割,

如果场景允许，也许可以尝试尝试 K-V 型存储结构的数据库。

还是把这个这个数组serialize后存入数据库中吧

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