Set Identity as (11 - 2) in sql table I have a issue,

I want to set the ID column, where the ID should start from 11-2 then it should auto- increment by 1 like

11-3, 11-4.

I am using sql-server 2008 R2. Please help
Use an IDENTITY column for the incrementing ID value, then prefix it with 11- as a computed column. 

CREATE TABLE [Table2]
    (
    ID int IDENTITY(1,1),
    ID_pretty AS ('11-' + CAST(ID AS nvarchar))
    CONSTRAINT pk_ID PRIMARY KEY (ID))
GO