CREATE TABLE [dbo].[Add_emp](
[Sr_no] [int] IDENTITY(1,1) NOT NULL,
[ID_no] [nvarchar](max) NOT NULL,
[Name] [nvarchar](max) NOT NULL,
[F_name] [nvarchar](max) NOT NULL,
[Designation] [nvarchar](max) NOT NULL,
[Station] [nvarchar](max) NOT NULL,
[pf_no] [nvarchar](50)PRIMARY KEY NOT NULL,
[Department] [nvarchar](max) NOT NULL,
[Dob] [nvarchar](50) NOT NULL,
[Date_of_appoinment] [nvarchar](max) NOT NULL,
[height] [nvarchar](50) NOT NULL,
[body_mark] [nvarchar](max) NULL,
[Address] [nvarchar](max) NOT NULL,
[Ward_section] [nvarchar](max) NOT NULL,
[image] [nvarchar](max) NULL,
[cl] [int] NOT NULL DEFAULT(8) ,
[lap] [int] NOT NULL DEFAULT(15) ,
[Hlap] [int] NOT NULL DEFAULT(10)
}
Try this code