mysql where in from field multiple value

Question

I have table region with fields

id | name | dates

Sample data

1 | local | "2018-01-01", "2018-01-02", "2018-01-03"

I want a query like this

SELECT * FROM region WHERE "2018-01-02" in (region.dates) 

but this does not work. I do not use json data in this case. How can I change it?

Answer 1

(My)SQL doesn't work like that as it will see region.dates as a simple string. In which case, you can do SELECT * FROM region WHERE dates LIKE '%"2018-01-02"%';

However, a better solution would be to devolve that column into another table.