Can a sql server table have two identity columns?

Question

I need to have one column as the primary key and another to auto increment an order number field. Is this possible?

EDIT: I think I\'ll just use a composite number a

Answer 1

create table #tblStudent
(
    ID int primary key identity(1,1),
    Number UNIQUEIDENTIFIER DEFAULT NEWID(),
    Name nvarchar(50)
)

Two identity column is not possible but if you accept to use a unique identifier column then this code does the same job as well. And also you need an extra column - Name column- for inserting values.

Example usage:

insert into #tblStudent(Name) values('Ali')

select * from #tblStudent

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Ps: NewID() function creates a unique value of type uniqueidentifier.