DataTables ServerSide - manipulate a result

austin22

Hi,
i'm using DataTables with ServerSide.
In the database, i have 5 columns, and one column called "results" is a json that include 10 differents datas
In the Table, i want to display the data of the 4 columns + each data in one column.(so the table will be of 14 columns)
So in my file server_processing.php, i don't know how to proceed ? where i should manipulate the results ?

thank you for help! i'm stuck since days