Question

I’m using SQL Server and I want to use identity constraint in it

I know how to use it in following manner

create table mytable
(
 c1 int primary key identity(1,1);
)

the above code works fine but what if i want the identity column to have values as EMP001, EMP002,… instead of 1,2….

Thanks in advance,
Guru

Answer 1

Identity columns can only be integers. If you want it to “look like” EMP001, EMP002, etc then that’s simply a display issue and not a storage one (that is, you don’t need to store “EMP001”, “EMP002” etc, just store it as 1, 2, 3 via a normal identity column and display it in your application as “EMP001”, “EMP002”, etc)