Add automatic code to data table rows

[Eri]

Hi all
I was wondering if there is a method to add a column in a data table to get the code for evey row inserted by a user, in an automatic way.
Thank you

[FJCC]

Can you please give an example of what "the code for every row" would look like? I am not sure what you mean. Say a data table contained the following.

Name  Height  Weight
Steve  1.7      60
Mary   1.5      50

What would be in the new column?

[Eri]

Thank you for your attention! The table could look like this, where the "Name" is the code for each person:

Name	Height	Weight
person_1	1.7	60
person_2	1.5	50

Maybe a simple solution would be to be careful and use different "Name" each time, but this is rather prone to mistakes.
Also, in a session a row could be deleted, and so next time we would not know if a given Name has been used in the past. So, I thought to allow Name to be filled in automatically. A solution, could be that in every session the first available code would be sth like max(Name)+2 (so in this case person_4). Is it possible to automate the process with DT?
Thanks a lot!