Mysql可以拆分列吗? [英] Can Mysql Split a column?

问题描述

我有一列用逗号分隔的数据:

I have a column that has comma separated data:

1,2,3
3,2,1
4,5,6
5,5,5

我正在尝试进行搜索，以分别查询CSV字符串的每个值.

I'm trying to run a search that would query each value of the CSV string individually.

0<first<5   and  1<second<3  and  2<third<4 

我知道我可以返回所有查询，然后自己拆分并自己比较. 我很好奇是否有办法做到这一点，所以mysql可以完成处理工作. 谢谢！

I get that I could return all queries and split it myself and compare it myself. I'm curious if there is a way to do this so mysql does that processing work. Thanks!

推荐答案

使用

substring_index(`column`,',',1) ==> first value
substring_index(substring_index(`column`,',',-2),',',1)=> second value
substring_index(substring_index(`column`,',',-1),',',1)=> third value

在您的where子句中.

in your where clause.

SELECT * FROM `table`
WHERE 
substring_index(`column`,',',1)<0 
AND
substring_index(`column`,',',1)>5

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