MySQL table with multiple values in one field [duplicate]

Answer 1

You should create extra table for it....

For example...

Consider the scenario that 1 item may have many categories and 1 category may have many items...

Then you can create table like this...

Create three tables for that....

(1) tblItem :

  fields:
            itemId  (PK)
            itemName
            etc..

(2) tblCategory :

  fields:
            categoryId  (PK)
            categoryName
            etc..

(3) tblItemCategory :

  fields:
            itemId  (PK/FK)
            categoryId  (PK/FK)

So according to your data you can create an extra table for it....
I think it would be optimize way....