As already mentioned your database design is bad.
I guess each value in the column stands for one clearly defined setting.
So why not create a correct datatable like this
Key then should be the setting name.
User_id is only needed if you have multiple user of course
In that Case you can easily filter by settings for a user, you can even group_concat the values to one string if really needed (what I don’t think so)
You can even directly create a settings object with one query.
At the end I always go with JSON columns for such data storage
Sorry, but I don’t understand at all what you say. I guess that I use the word value with a different meaning that yours.
For my needs the problem I had is now fixed…
If you don’t fix your database design now your problems are just beginning. Do not store comma separated data in a column. Learn about Database Normalization.