本文介绍了MySQL查询:将逗号分隔的值与包含逗号分隔的字符串的列匹配的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个用户表,其中包含一个用逗号分隔的兴趣ID作为值的列(例如兴趣).例如

I have a user table containing a column(say interests) with comma separated interest ids as a value.e.g.

user  interests
A     12,13,15
B     10,11,12,15
C     9,13
D     10,12

现在,我有一个字符串,其逗号分隔值为"13,15".

Now, I have a string with comma separated values as "13,15".

我想从上表中获取具有兴趣13,15的用户,这意味着它应该返回用户A,B和C,因为用户A包含了兴趣(13,15),用户B将该兴趣与15&用户将兴趣与13匹配.

I want to fetch the users who has the interest 13,15 from above table means it should return the user A, B & C as user A contains both interest(13,15), user B matched the interest with 15 & user matched the interest with 13.

什么是SQL,因为我的表中有很多用户.

what will be the SQL as I have a lots of users in my table.

推荐答案

可以使用regexp来实现,如@ 1000111所述,但是使用更复杂的regexp.看看这个,例如:

It can be done with regexp as @1000111 said, but with more complicated regexp. Look at this, for example:

(^|,)(13|15)(,|$)

这将不匹配135中的13,或13中的1,依此类推.例如,对于数字13,它将匹配下一个字符串:

This will not match 13 from 135, or 1 from 13 and so on. For example, for number 13 this will match next strings:

1,13,2
13,1,2
1,13
13,2
13

但不会与这些匹配

1,135,2
131,2
1,113

这是查询:

SET @search = '13,15';

SELECT *
FROM test
WHERE interests REGEXP CONCAT('(^|,)(', REPLACE(@search, ',', '|'), ')(,|$)')

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08-10 23:00