IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
              WHERE SYSCOLUMNS.NAME = 'DVT' AND SYSOBJECTS.name = 'HDOGUM')
ALTER TABLE dbo.[HDOGUM] ADD DVT  bit NOT NULL CONSTRAINT [DF_HDOGUM_DVT] DEFAULT (0)
GO

IF NOT EXISTS (SELECT * FROM SYSCOLUMNS INNER JOIN SYSOBJECTS ON SYSOBJECTS.id = SYSCOLUMNS.id 
              WHERE SYSCOLUMNS.NAME = 'ENSTRUMAN' AND SYSOBJECTS.name = 'HDOGUM')
ALTER TABLE dbo.[HDOGUM] ADD ENSTRUMAN  bit NOT NULL CONSTRAINT [DF_HDOGUM_ENSTRUMAN] DEFAULT (0)
GO
