So client gives me a string like "1,23,23,abc,ggg,544,tf4," from user 12 . There can be infinit number of elements with no spaces just value,value,... structure. I have users table (with users uId(key), names etc). I have streams table with ( sId(key), externalID, etc values). User sends me externalId's. And I need to hawe externalId's in play list (not my sId's). I need some way to store such array into my DB and be able to get it from DB.

I need to be able to do 2 things

1. return such string back to user
2. be able to get na array from it like {1; 23; 23; abc; ggg; 544; tf4;}

So what is best method (best here means shourt(small amount of) code)

1. to store such data into db
2. to retrivew stored tata in bouth ways shown