I have a table with 3 coulmns say id, column1, column2, column3.
i want to add column1 and column2 values by importing.
i need colum3 as formule ( just like in excel)
i want to column3 automatically get added and displayed while importing column1 and column2.
here id will be auto incremental( hope no issue for this extra column).
Please suggest me how to do in phpmyadmin