Mysql 来自另一个表的逗号分隔列匹配

Question

I would like to select all matches from a commaseparated column in table2, where column could be like this: 0,1,2 OR 2,4,5 OR 2,5 OR 1,3,5 etc.

I have tried with:

SELECT * from table where 1,3,5 IN(SELECT commaseparated FROM table2) WHERE ..

But error on statement when using commas.

I've also tried using REGEXP but in my case i need to search for all matches within 1,3,5

How can i solve this one? :)

Answer 1

Can't do that in standard SQL. it's

   WHERE singlevalue IN (list, of, values)

if you want to compare lists against lists, you should revamp your tables so they're properly normalized. Storing formatted data in a field basically negates the purpose of having a relational database - you can't establish relationships with the data if it's not in a format that allows relationships to be formed.

If those CSV lists were in sub-tables, you could do a very simple JOIN query to meet your specifications.