Mysql 可以拆分列吗?
我有一列包含逗号分隔的数据:
I have a column that has comma separated data:
1,2,3
3,2,1
4,5,6
5,5,5
我正在尝试运行将分别查询 CSV 字符串的每个值的搜索.
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并自己拆分并自己比较.我很好奇是否有办法做到这一点，以便 mysql 进行处理工作.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
在你的 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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