How to create an Auto number field?

How to create an Auto number field?

Is there an easy way to create an auto number field that I can use as my primary key field like I can do in Access database? Why isn't there an option for a number field to auto increment the number and also an option to start at a particular number instead of zero or one? I've suggested this to Zoho support and they said they might add it someday in the future. Maybe if enough of us ask for it then they will.

In the mean time, which code do I need to enter to create such a field?