SQL Server 2008中的两个标识列。

I am creating a table in SQL Server with three columns. I want the first two columns to increment counts one by one. I used the first column as identity column that automatically increments 1 when row is inserted. I tried to do the same with second column (but SQL Server does not allow two identity columns per table). I found another way i-e using I am creating a table in SQL Server with three