sql查询的相关有关问题

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Release: 2016-06-13 13:33:14
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sql查询的相关问题
表结构
 id name nasid
  1 nas1 1,2,3
  2 nas2 2,3,4
  3 nas3 2,3,5


我现在有个两个nasid:1,2
我想查询上面三条数据中nasid包含1,2(至少包含一个数字)的所有数据

这个sql该怎么写呢,请各位高手给点思路,尝试过like,但是效率太低

------解决方案--------------------
select * from 表 where find_in_set('1',nasid) or find_in_set('2',nasid)
------解决方案--------------------
全表扫描,效率高不了的
------解决方案--------------------
用正则找吧。。


SELECT * FROM `2012` WHERE `2012` REGEXP '(1|2)+'

刚测了一下,你可到我系统test数据库中执行一下看看
------解决方案--------------------
正则简单一点的还行,稍复杂的一点的就相当不给力了。有现在的函数当然得用现成的函数.
to amani11:既然说到全表扫描的问题,你是怎么做的呢?

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