Question

In my database, we have a column called deleteList which holds comma separated values. How can I append values to an existing record in the database?

Answer 1

you need to UPDATE the second time if you want to concatenate the values.

UPDATE tableName
SET    deleteList = CONCAT(deleteList, ',', 'NEWVALUE')
WHERE  colName = val

where

• NEWVALUE is the value you want to add on the list
• colName is the key that identifies the row to be updated.