WE can make it with Table Query CREATE TABLE [dbo].[user]( [userID] [int] IDENTITY(1,1) NOT NULL, [fcode] [int] NULL, [scode] [int] NULL, [dcode] [int] NULL, [name] [nvarchar](50) NULL, [address] [nvarchar](50) NULL, CONSTRAINT [PK_user_1] PRIMARY KEY CLUSTERED ( [userID] ASC ), CONSTRAINT [UQ_codes] UNIQUE NONCLUSTERED ( [fcode], [scode], [dcode] ) ) ON [PRIMARY] OR : ALTER TABLE dbo.User ADD CONSTRAINT ucCodes UNIQUE (focde, scode, dcode)